sour
sour / ˈsou(ə)r/ • adj. having an acid taste like lemon or vinegar: she sampled the wine and found it was sour. ∎ (of food, esp. milk) spoiled because of fermentation. ∎ having a rancid smell: her breath was always sour. ∎ fig. feeling or expressing resentment, disappointment, or anger: she was quite a different woman from the sour, bored creature I had known. ∎ (of soil) deficient in lime and usually dank. ∎ (of petroleum or natural gas) containing a relatively high sulfur content.• n. a drink made by mixing an alcoholic beverage with lemon juice or lime juice: a rum sour.• v. make or become sour: [tr.] water soured with tamarind | [as adj.] (soured) soured cream | [intr.] a bowl of milk was souring in the sun. ∎ make or become unpleasant, acrimonious, or difficult: [tr.] a dispute soured relations between the two countries for over a year | [intr.] many friendships have soured over borrowed money. PHRASES: go (or turn) sour become less pleasant or attractive; turn out badly: the case concerns a property deal that turned sour.sour grapes an attitude in which someone disparages or affects to despise something because they cannot have it themselves: government officials dismissed many of the complaints as sour grapes.DERIVATIVES: sour·ish adj.sour·ly adv.sour·ness n.
sour
See also the grapes are sour.