sour

• sower, sowre (obsolete)

From Middle English sour, from Old English sūr (“sour”), from Proto-West Germanic *sūr, from Proto-Germanic *sūraz (“sour”), from Proto-Indo-European *súHros (“sour”).

Cognate with West Frisian soer, Dutch zuur (“sour”), Low German suur, German sauer (“sour”), Danish, Swedish and Norwegian sur, French sur (“sour”), Faroese súrur (“sour”), Icelandic súr (“sour, bitter”).

• (General American) IPA^(key): /ˈsaʊ(ə)ɹ/
• (Received Pronunciation) IPA^(key): /ˈsaʊə/

• Audio (US)

  (file)

• Rhymes: -aʊə(ɹ)
• Rhymes: -aʊ.ə(ɹ)

sour (comparative sourer, superlative sourest)

1. Having an acidic, sharp or tangy taste.

   Lemons have a sour taste.

   • 1631, Francis [Bacon], “(please specify |century=I to X)”, in Sylua Syluarum: Or A Naturall Historie. In Ten Centuries. […], 3rd edition, London: […] William Rawley; [p]rinted by J[ohn] H[aviland] for William Lee […], OCLC 1044372886:

     All sour things, as vinegar, provoke appetite.

   • 2018 May 16, Adam Rogers, Wired, "The Fundamental Nihilism of Yanny vs. Laurel":

     A few types of molecules get sensed by receptors on the tongue. Protons coming off of acids ping receptors for "sour." Sugars get received as "sweet." Bitter, salty, and the proteinaceous flavor umami all set off their own neural cascades.

2. Made rancid by fermentation, etc.

   Don't drink that milk; it's turned sour.

3. Tasting or smelling rancid.

   His sour breath makes it unpleasing to talk to him.

4. (of a person's character) Peevish or bad-tempered.

   He gave me a sour look.

   • c. 1591–1592 (date written), William Shakespeare, “The Third Part of Henry the Sixt, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358, [Act III, scene i]:

     He was a scholar […] / Lofty and sour to them that loved him not, / But to those men that sought him sweet as summer.

5. (of soil) Excessively acidic and thus infertile.

   sour land

   a sour marsh

6. (of petroleum) Containing excess sulfur.

   sour gas smells like rotten eggs

7. Unfortunate or unfavorable.
   • 1613, William Shakespeare; [John Fletcher], “The Famous History of the Life of King Henry the Eight”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358, [Act IV, scene ii]:

     Let me embrace thee, sour adversity

   • 2011 October 1, Phil Dawkes, “Sunderland 2 - 2 West Brom”, in BBC Sport‎:

     The result may not quite give the Wearsiders a sweet ending to what has been a sour week, following allegations of sexual assault and drug possession against defender Titus Bramble, but it does at least demonstrate that their spirit remains strong in the face of adversity.

8. (music) Off-pitch, out of tune.
   • 2010, Aniruddh D. Patel, Music, Language, and the Brain, page 201:

     Unlike what the name implies, there is nothing inherently wrong with a sour note: It is perfectly well-tuned note that would sound normal in another context (and which presumably would not sound sour to someone unfamiliar with tonal music).

• (soil, petroleum): sweet

• go sour
• sourly
• sourness

sour (countable and uncountable, plural sours)

1. The sensation of a sour taste.

   (Can we add an example for this sense?)

2. A drink made with whiskey, lemon or lime juice and sugar.

   (Can we add an example for this sense?)

3. (by extension) Any cocktail containing lemon or lime juice.
4. A sour or acid substance; whatever produces a painful effect.
   • 1590, Edmund Spenser, “Book I, Canto III”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, OCLC 960102938:

     For many Years of Sorrow can dispense;
     A Dram of Sweet is worth a Pound of Sour

5. The acidic solution used in souring fabric.

• laundry sour

sour (third-person singular simple present sours, present participle souring, simple past and past participle soured)

1. (transitive) To make sour.

   Too much lemon juice will sour the recipe.

2. (intransitive) To become sour.
   • 1720, Jonathan Swift, To Stella, on transcribing my Poems

     So the sun's heat, with different powers, / Ripens the grape, the liquor sours.

3. (transitive) To spoil or mar; to make disenchanted.
   • 1611 April (first recorded performance), William Shakespeare, “The Tragedie of Cymbeline”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358, [Act V, scene v]:

     To sour your happiness I must report, / The queen is dead.

   • 1749, Henry Fielding, The History of Tom Jones, a Foundling, volume (please specify |volume=I to VI), London: A[ndrew] Millar, […], OCLC 928184292:

     He was prudent and industrious, and so good a husbandman, that he might have led a very easy and comfortable life, had not an arrant vixen of a wife soured his domestic quiet.

4. (intransitive) To become disenchanted.

   We broke up after our relationship soured.

5. (transitive) To make (soil) cold and unproductive.
   • 1832, Joseph Harrison, Sir Joseph Paxton, The Horticultural Register, page 396:

     stagnant water , which tends to sour the soil

6. To macerate (lime) and render it fit for plaster or mortar.
7. (transitive) To process (fabric) after bleaching, using hydrochloric acid or sulphuric acid to wash out the lime.

• besour
• unsour

• Ruso, ours

sour (feminine soure, masculine plural sours, feminine plural soures)

1. (nonstandard) Alternative form of sûr

sour

1. (nonstandard) Alternative form of sur

From Old English sūr.

• sower, soure, sowre

• IPA^(key): /suːr/

sour

1. sour, acidic, bitter
2. foul-smelling, rancid
3. fermented, curdled
4. unpleasant, unattractive

• sour dogh

• English: sour
• Scots: sour

From Old French essorer.

sour

1. Alternative form of soren (“to soar”)

• (Rumantsch Grischun, Sursilvan, Sutsilvan, Surmiran) sora

From Latin soror.

sour f (plural sours)

1. (Puter, Vallader) sister

• (in terms of gender):
  • (Rumantsch Grischun, Sursilvan, Sutsilvan, Surmiran, Vallader) frar
  • (Puter) frer