1
- having an acid taste like lemon or vinegar酸的：
she sampled the wine and found it was sour.
她尝了一口酒, 发现是酸的。
1.1
- (of food, especially milk or bread) having gone bad because of fermentation（食品, 尤指牛奶或面包）馊的。
1.2
- having a rancid smell恶臭的：
her breath was always sour.
她的呼吸总有股酸臭味。
1.3
- figurative feeling or expressing resentment, disappointment, or anger〈喻〉尖酸的; 不满的; 气愤的：
she was a different woman from the sour, bored creature I had known.
她和我以前认识的那个尖酸刻薄、什么也不感兴趣的女人完全不同了。
1.4
- (of soil) deficient in lime and usually dank（土壤）缺少石灰质的, 酸性过重的。
1.5
- (of petroleum or natural gas) containing a relatively high proportion of sulphur（石油, 天然气）含硫量较高的。
with modifier
- a drink made by mixing an alcoholic drink with lemon juice or lime juice由柠檬汁或酸橙汁和酒混合而成的饮料：
a rum sour.
朗姆柠檬饮料。
1
- make or become sour（使）变酸：
with obj. water soured with tamarind加有罗望子而变酸了的水
as adj. soured soured cream变酸的奶油
no obj. a bowl of milk was souring in the sun.一碗牛奶在阳光下正在变酸。
1.1
- make or become unpleasant, acrimonious, or difficult（使）变得不愉快; （使）变得紧张; （使）变得困难：
with obj. a dispute soured relations between the two countries for over a year一个争议使两国关系一年多来都很紧张
no obj. many friendships have soured over borrowed money.很多朋友之间的友谊都因为借钱而紧张。
短语
go（或turn）sour
- become less pleasant or attractive; turn out badly变得不愉快; 失去吸引力; 变得不受欢迎：
the vision of bedsit freedom soon turned sour.
这种卧室兼起居室带来的自由想像很快就失去吸引力了。
sour grapes
- used to refer to an attitude in which someone disparages or affects to despise something because they cannot have it themselves酸葡萄心理（因为自己得不到就诋毁或蔑视某物）。
- ORIGIN: with allusion to Aesop's fable The Fox and the Grapes.
派生词
sourish
adjectivesourly
adverbsourness
noun词源
Old English sūr, of Germanic origin; related to Dutch zuur and German sauer.