acute - Wiktionary

acute – Wiktionary



All the interior angles of an acute triangle (sense 7) measure lower than 90 levels

From Late Center English acūte (of a illness or fever: beginning instantly and lasting for a short while; of a humour: irritating, sharp), from Latin acūta,[1] from acūtus (sharp, sharpened), excellent passive participle of acuō (to make pointed, sharpen, whet), from acus (needle, pin),[2] from Proto-Indo-European *h₂eḱ- (sharp). The phrase is cognate to ague (acute, intermittent fever).

As regards the noun, which is derived from the verb, evaluate Center English acūte (extreme however short-lived fever; of blood: corrosiveness, sharpness; musical be aware of excessive pitch).[3]



acute (comparative acuter or extra acute, superlative acutest or most acute)

  1. Transient, fast, quick.
    Synonyms: quick, fast
    Antonyms: leisurely, sluggish

    It was an acute occasion.

    • 2013 July-August, Philip J. Bushnell, “Solvents, Ethanol, Automotive Crashes & Tolerance: How Dangerous is Inhalation of Natural Solvents?”, in American Scientist[1], Analysis Triangle Park, N.C.: Sigma Xi, ISSN 0003-0996, OCLC 231015383, archived from the unique on 19 June 2013:

      Surprisingly, this evaluation revealed that acute publicity to solvent vapors at concentrations beneath these related to long-term results seems to extend the chance of a deadly vehicle accident. Moreover, this improve in threat is corresponding to the chance of loss of life from leukemia after long-term publicity to benzene, one other solvent, which has the well-known property of inflicting the sort of most cancers.

  2. Excessive or shrill.
    Antonym: grave

    an acute accent or tone

    • 1751, “a Lover of the Mathematicks” [pseudonym; Nathaniel Whittemore?], “Half II. New Paradoxes Solved.”, in A Mathematical Miscellany, in 4 Elements. [], London: Printed for M. Cooper, [], OCLC 931756039, paradox 61, stanza III, web page 53:

      The nimble Fly’s Wings faster had been / Than these of her Competitor [a bee], / As might by this seem; / For an acuter Tone they made, / And in a ſharper Key they play’d, / (Which made the matter clear.)

    • 1851, William C. Larrabee, “Lecture X. Evidences of Design from the Construction and Diversifications of the Exterior Senses.”, in B[enjamin] F[ranklin] Tefft, editor, Lectures on the Scientific Evidences of Pure and Revealed Faith, Cincinnati, Oh.: Revealed by L. Swormstedt & J. H. Energy, for the Methodist Episcopal Church, []; R. P. Thompson, printer, OCLC 4596096, paragraph 233, web page 177:

      The acuteness of sound in stringed devices relies on three circumstances—size, thickness, and stress. The shorter, smaller, and tighter a string, the extra acute the sound. [] Within the violin, while you need an acute sound, you tighten the string. If you want a loud sound, you draw the bow over the strings closely.

  3. Intense, delicate, sharp.
    Synonyms: eager, highly effective, robust
    Antonyms: boring, obtuse, sluggish, witless

    She had an acute sense of honour.  Eagles have very acute imaginative and prescient.

    • 1813 January 27, [Jane Austen], chapter II, in Satisfaction and Prejudice, quantity III, London: [] T[homas] Egerton [], OCLC 38659585, pages 37–38:

      Miss Darcy was tall, and on a bigger scale than Elizabeth; and, although little greater than sixteen, her determine was fashioned, and her look womanly and swish. She was much less good-looking than her brother; however there was sense and good humour in her face, and her manners had been completely unassuming and delicate. Elizabeth, who had anticipated to seek out in her as acute and unembarrassed an observer as ever Mr. Darcy had been, was a lot relieved by discerning such totally different emotions.

    • 1912, Fyodor Dostoevsky; Constance Garnett, transl., “Elders”, in The Brothers Karamazov: A Novel in 4 Elements and an Epilogue (Novels of Fyodor Dostoevsky; 1), London: W[illiam] Heinemann, OCLC 5234211; republished as The Brothers Karamazov, New York, N.Y.: The Trendy Library, [1943], OCLC 3216382, web page 32:

      It was presently that the discord between Dmitri and his father appeared at its acutest stage and their relations had turn into insufferably strained.

    • 2013, Thomas Keneally, Disgrace and the Captives, North Sydney, N.S.W.: Random Home Australia, →ISBN; 1st Atria Books hardcover version, New York, N.Y.: Atria, 2015, →ISBN, web page 87:

      Then, at three, for Neville’s sake and for the sake of her marriage as undernourished and spectral because it had been rendered by absence, its substance being all sooner or later, and an trustworthy hope of listening to some information or of extending solace to different girls, not least these with youngsters, who appeared every to have an acuter sense of the person she was lacking than Alice had of Neville, she attended the Friday assembly for wives and moms of prisoners of conflict on the College of the Arts.

  4. Pressing.
    Synonyms: emergent, urgent, sudden

    His want for medical consideration was acute.

    • 1851 November 14, Herman Melville, “The Chase—First Day”, in Moby-Dick; or, The Whale, 1st American version, New York, N.Y.: Harper & Brothers; London: Richard Bentley, OCLC 57395299, web page 601:

      [] Ahab quickly ordered the ship’s course to be barely altered, and the sail to be shortened. The acute coverage dictating these actions was sufficiently vindicated at dawn, by the sight of an extended glossy on the ocean straight and lengthwise forward, easy as oil, and resembling within the pleated watery wrinkles bordering it, the polished metallic-like marks of some swift tide-rip, on the mouth of a deep, fast stream.

  5. (botany) With the edges assembly on to kind an acute angle (at an apex or base).
    Antonym: obtuse
    • 2007 April 24, R[obert] J[ames] Chinnock, “Taxonomic Therapy of the Household Myoporaceae R. Br.”, in Eremophila and Allied Genera: A Monograph of the Plant Household Myoporaceae, Dural Supply Centre, N.S.W.: Rosenberg Publishing, →ISBN, part XXV (Eremophila sec. Pulchrisepalae (12 spp.)), web page 622:

      204. Eremophila abietina [] Corolla 23–35 mm lengthy, cream or very pale lilac, lobes faintly metallic bluish inexperienced or lilac, tube often brownish, prominently purple noticed; outer and internal surfaces glandular-pubescent; lobes acute, lobe of decrease lip strongly reflexed.

  6. (geometry) Of an angle: lower than 90 levels.
    Antonym: obtuse

    The trainer identified the acute angle.

    • 1850 March 30, J[ohn] H[all] Gladstone, “On Chlorophosphuret of Nitrogen and Its Merchandise of Decomposition”, in Henry Watts, editor, The Quarterly Journal of the Chemical Society of London, quantity III, quantity X, London: Hippolyte Bailliere, [], printed 1851, OCLC 848175490, half I, web page 138:

      Chlorophosphuret of nitrogen (at peculiar temperatures) is a stable crystalline physique. [] The type of the crystals, as obtained by sublimation, is that of a rhomboid, of which the obtuse angle measures 131° or 132°, the acute 48° or 49°: the acute angle of this rhomboid, both at one or each ends, is usually truncated, when in fact the angle fashioned is about 114°: the hexagonal prism can also be discovered.

  7. (geometry) Of a triangle: having all three inside angles measuring lower than 90 levels.
    Synonym: acute-angled
    Antonyms: obtuse, obtuse-angled

    an acute triangle

    • 1997, Joen Wolfrom, “The Fascination of Shapes”, in The Visible Dance: Creating Spectacular Quilts, Lafayette, Calif.: C&T Publishing, →ISBN; republished Lafayette, Calif.: C&T Publishing, 2009, →ISBN, web page 39:

      With a view to be an acute triangle, all three angles of a triangle have to be much less than 90°. These triangles can have very prickly personalities. So, if you wish to create photographs of porcupines, rugged mountains, or slim pine timber in your geometric design, you might greatest do it by utilizing acute triangles []. Probably the most generally used acute triangle in quiltmaking is the equilateral triangle []. All three of its angles are 60°.

  8. (linguistics, mainly historic) Of an accent or tone: usually increased than others.
    • 1804, William Mitford, “Part IV. Of Tones or Accents, and Emphasis in English Speech, and of Their Reference to the Time or Amount of Syllables.”, in An Inquiry into the Rules of Concord in Language, and of the Mechanism of Verse, Trendy and Antient, 2nd version, London: Printed by Luke Hansard, [], for T[homas] Cadell and W[illiam] Davies, [], OCLC 156111119, pages 57–58:

      Let this [the word alalal] be ſpoken as an Engliſh phrase, with the ſtrong accent on both ſyllable, or, on every, in repeating the phrase; and, no change of articulation diſturbing the ear, will probably be abundantly evident that, with peculiar Engliſh pronunciation, the strengthened syllable has at all times the acuter tone, or, in muſical phraſe, the upper be aware.

  9. (drugs) Of an irregular situation of current or sudden onset, in distinction to delayed onset; this sense doesn’t indicate severity, not like the frequent utilization.

    He dropped useless of an acute sickness.

    • 1995, G. J. Kaloyanides, “Drug-induced Acute Renal Failure”, in Rinaldo Bellomo and Claudio Ronco, editors, Acute Renal Failure within the Critically In poor health (Replace in Intensitve Care and Emergency Drugs; 20), Berlin; Heidelberg: Springer-Verlag, DOI:10.1007/978-3-642-79244-1, →ISBN, web page 204:

      Of explicit relevance to the ICU [intensive care unit] setting is ketorolac, a NSAID [non-steroidal anti-inflammatory drug] that’s being more and more used for ache management with a purpose to keep away from issues of respiratory melancholy, sedation, and habit related to narcotics. [] ICU sufferers, who usually are below nice stress from an acute sickness that’s typically accompanied by multiorgan dysfunction together with renal insufficiency, are particularly liable to develop renal issues from ketorolac [].

  10. (drugs) Of a short-lived situation, in distinction to a power situation; this sense additionally doesn’t indicate severity.
    Antonym: power

    The acute signs resolved promptly.

    • 2013 Could–June, Katie L. Burke, “Within the Information: Bat Information”, in American Scientist[2], quantity 101, quantity 3, Analysis Triangle Park, N.C.: Sigma Xi, ISSN 0003-0996, OCLC 231015383, archived from the unique on 5 June 2017, web page 193:

      Bats host many high-profile viruses that may infect people, together with extreme acute respiratory syndrome and Ebola. A current research explored the ecological variables which will contribute to bats’ propensity to harbor such zoonotic illnesses by evaluating them with one other order of frequent reservoir hosts: rodents.

  11. (orthography) After a letter of the alphabet: having an acute accent.

    The final letter of ‘café’ is ‘e’ acute.

    • 2007, Geoff[rey J. S.] Hart, “Enhancing in Particular Conditions”, in Efficient Onsceen Enhancing: New Instruments for an Outdated Occupation, Pointe-Claire, Que.: Diaskeuasis Publishing, →ISBN, web page 404:

      A extra conservative method, notably in case your creator is a talented pc person, can be to interchange the issue characters with easy phrases or codes which can be assured to switch efficiently between computer systems. For instance, you would change é with e-acute if that specific character is inflicting issues. [] The creator might then do a search and change to alter all situations of e-acute again to é earlier than publication.

    • 2017, [Michael] Mitchell; [Susan] Wightman, “Overseas Languages”, in Typographic Fashion Handbook, London: MacLehose Press, →ISBN, part 10.2.1 (Generally Used Accents), web page 143:

      Generally used European accents can be found as beneath: / á Á a acute / [] / é É e acute / [] / í Í i acute / [] / ó Ó o acute / [] / ú Ú u acute

Derived phrases[edit]

Associated phrases[edit]



acute (plural acutes)

  1. (drugs) An individual who has the acute type of a dysfunction, corresponding to schizophrenia.
    • 1990, Gerry Fewster, “All the way down to Enterprise”, in Being in Little one Care: A Journey into Self, Binghamton, N.Y.; London: The Haworth Press, →ISBN; republished New York, N.Y.; Hove, East Sussex: Routledge, 2012, →ISBN, web page 113:

      Anne Marie had been assigned a ‘fixed supervision’ standing. [] All the time avoiding the unrest of the tv lounge, she would generally be part of among the older ‘acutes’ who sat remoted in metallic chairs on the finish of the hallway and gaze out of the window with them.

  2. (linguistics, mainly historic) An accent or tone increased than others.
    Antonym: grave
    • 1827, Uvedale Worth, “Restoration of Historic Accent Not possible”, in An Essay on the Trendy Pronunciation of the Greek and Latin Languages, Oxford: Printed by W. Baxter, OCLC 20216673, web page 206:

      [I]t can be unusual if we wer to recite Homer, elevating our voices on the acutes, reducing them on the graves, and managing the circumflexes in addition to we might, but to recite Virgil with none of those common elevations, depressions, and circumbendibus.
    • 1869–1870, William D[wight] Whitney, “II.—On the Nature and Designation of the Accent in Sanskrit.”, in Transactions of the American Philological Affiliation, Hartford, Conn.: Revealed by the [American Philological] Affiliation; printed by Case, Lockwood & Brainard, printed 1871, OCLC 643390955, pages 40–41:

      There can be no sense in our assuming that even an impartial circumflex after an acute could be raised in pitch for the sake of clearer distinction from that acute; for it’s sufficiently distinguished by its sliding tone; and, if it had any proper to be additional distinguished, an acute following an acute would have way more proper; whereas, however, any variety of acutes are allowed to succeed each other, with out modification of their pure character.

  3. (orthography) An acute accent (´).

    The phrase ‘cafe’ typically has an acute over the ‘e’.

    • 1817 June, John Farey, Sen., “CI. On Mr. Listons, or the Euharmonic Scale of Musical Intervals, []”, in Alexander Tilloch, editor, The Philosophical Journal and Journal: [], quantity XLIX, quantity 230, London: Printed by Richard and Arthur Taylor. [], OCLC 314687878, web page 445:

      The variety of Notes on this Desk, with out both acute or grave marks (´ or `), is 75. Of these bearing one acute mark (´) it’s 74, of these with two acutes (´´) 70, with three acutes (´´´ or ´3) 51, []

    • 1824, J[ohn] Johnson, “A Fount of Letter, as Thought of by Letter Founders”, in Typographia, or The Printers’ Teacher: [], quantity II, London: Revealed by Messrs. Longman, Hurst, Rees, Orme, Brown & Inexperienced, [], OCLC 489871362, web page 34:

      The 5 vowels marked with acutes over them, it’s possible, had been first contrived to help the ignorant monks in studying the church service, that by this implies they could arrive to a correct and settled pronunciation within the discharge of their sacerdotal duties; []



acute (third-person singular easy current acutes, current participle acuting, easy previous and previous participle acuted)

  1. (transitive, phonetics) To provide an acute sound to.

    He acutes his rising inflection an excessive amount of.

    • 1696, [William] Lily; W. T., “Prosodia Examin’d and Clarify’d by Query and Reply”, in Lily, Improved, Corrected, and Defined; with the Etymological A part of the Frequent Accidence, London: Printed for R. Bentley, [], OCLC 838404801, web page 151:

      Polyſyllables having their Penultima lengthy by poſition are acuted; as Camíllus: however having it lengthy by nature and the final ſhort, they’re circumflected; as, Românus, amâre: besides the Compounds of ſit, whose Ultima is acuted; as Malefít, calefít, benefít, ſatisfít.

    • 1762, John Foster, “On the Accent of the Outdated Greeks. []”, in An Essay on the Totally different Nature of Accent and Amount, with Their Use and Utility within the Pronunciation of the English, Latin, and Greek Languages; [], Eton, Berkshire: Printed by J. Pote; [], OCLC 702647599, pages 103–104:

      This phrase ωροπαροξύνον has been usually underſtood, earlier than Dr. G[ally] undertook to elucidate it otherwiſe, to ſignify “acuting the antepenultima.”

    • 1859, John Kelly, “On the Pronunciation of the Manks Letters”, in A Sensible Grammar of the Antient Gaelic, or Language of the Isle of Man, often Known as Manks.  [] (Manx Society collection; 2), Douglas, Isle of Man: Printed for the Manx Society, OCLC 29134267; reprinted London: Bernard Quaritch, [], 1870, OCLC 29380641, web page 4:

      O is a broad vowel. When acuted, it’s pronounced as o in gone; thus, cron, son; when circumflexed, as o in bone; thus, ôney. And thus it solutions to the Greek Omicron and Omega.

    • 1874, John Stuart Blackie, “On the Place and Energy of Accent in Language”, in Horæ Hellenicæ: Essays and Discussions on Some Vital Factors of Greek Philology and Antiquity, London: Macmillan & Co., OCLC 702335519, paragraph 4, web page 347:

      That the acute accent meant stress is apparent from the inherited intonation of the trendy Greeks; [] and, if any individual objects that the trendy Greek not solely acutes the final syllables of those phrases, however makes their amount lengthy, that is all in favour of my argument; []

  2. (transitive, archaic) To make acute; to sharpen, to whet.
    • 1732, John Floyer; Edward Baynard, “[The Appendix.] The Different Remedy Wrought by the Chilly Bathtub, was upon Mrs. Taylor, a Younger Gentlewoman that Boarded at My Father’s”, in ΨΥΧΡΟΛΟΥΣΙ´Α [PSYCHROLOUSIA]: Or, The Historical past of Chilly-bathing, each Historic and Trendy. In Two Elements. [], sixth version, London: Printed for W[illiam] Innys and R. Manby, [], OCLC 561191015, half II (Of Chilly Baths), pages 476–477:

      [A]n previous Farmer [] uſed, when fuddled over Night time, to stroll bare, or solely in his Shirt, till he had cooled himſelf throughly, [] This Courſe might not be improperly name’d a Balenum Aerium, and could also be of nice Uſe to ſober Individuals, in addition to the Fuddlers; for operating empty, after Sleep and Concoction, warms the Blood and Spirits, acutes the Circulations, followers and cools the Lungs, helps each Excretion and Secretion; []

    • 2010, R. J. Cyle, The Verticord: Turner of Hearts, [Bloomington, Ind.]: Xlibris, →ISBN, web page 36:

      It had been over per week that I had not been over to go to my most favorable place. Since I used to be allowed a uncommon opening that jaggled an intense curiosity, it acuted my senses with nice anticipation {that a} residing present was felt in my middle, introduced on by one thing really new.



  1. ^ “acūte, adj.” in MED On-line, Ann Arbor, Mich.: College of Michigan, 2007, retrieved 2 June 2018.
  2. ^ “acute” in Lexico,; Oxford College Press.
  3. ^ “acūte, n.” in MED On-line, Ann Arbor, Mich.: College of Michigan, 2007, retrieved 2 June 2018.

Additional studying[edit]





  1. first/third-person singular current subjunctive of acutar




  1. Inflected type of acuut.




  1. female singular of acut



acute (not comparable)

  1. acute





  1. female plural of acuto




  1. vocative masculine singular of acūtus


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