Definitions from Wiktionary (sour)

▸ adjective:  Tasting of acidity.
▸ adjective:  Made rancid by fermentation, etc.
▸ adjective:  Tasting or smelling rancid.
▸ adjective:  (of a person's character) Hostile or unfriendly.
▸ adjective:  Excessively acidic and thus infertile. (of soil)
▸ adjective:  Containing excess sulfur. (of petroleum)
▸ adjective:  Unfortunate or unfavorable.
▸ adjective:  (music) Off-pitch, out of tune.
▸ noun:  The sensation of a sour taste.
▸ noun:  A drink made with whiskey, lemon or lime juice and sugar.
▸ noun:  (by extension) Any cocktail containing lemon or lime juice.
▸ noun:  A sweet/candy having a sharply sour taste.
▸ noun:  A sour or acid substance; whatever produces a painful effect.
▸ noun:  The acidic solution used in souring fabric.
▸ verb:  (transitive) To make sour.
▸ verb:  (intransitive) To become sour.
▸ verb:  (transitive) To spoil or mar; to make disenchanted.
▸ verb:  (intransitive) To become disenchanted.
▸ verb:  (transitive) To make (soil) cold and unproductive.
▸ verb:  To macerate (lime) and render it fit for plaster or mortar.
▸ verb:  (transitive) To process (fabric) after bleaching, using hydrochloric acid or sulphuric acid to wash out the lime.
▸ Also see sour


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