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sour + noun
形容词作定语，修饰名词。
The lemon has a sour taste.
这个柠檬有酸味。
酸的；有酸味
sourest — superlative of sour
先理解核心含义，再看它在真实句子里的用法。
酸的；有酸味
acidic, sharp-tasting
The lemon has a sour taste.
这个柠檬有酸味。
酸的,有酸味的
Tasting of acidity.
因发酵等而腐臭的
Made rancid by fermentation, etc.
有腐臭味的
Tasting or smelling rancid.
敌对的,不友好的
Hostile or unfriendly.
These grapes are too sour to eat without sugar.
这些葡萄太酸了，不加糖没法吃。
A little lemon juice made the sauce pleasantly sour.
加一点柠檬汁让酱汁变得酸酸的，很可口。
She bit into the green apple and winced at its sour taste.
她咬了一口青苹果，被它酸涩的味道弄得皱起了脸。
形容词作定语，修饰名词。
The lemon has a sour taste.
这个柠檬有酸味。
系表结构，描述状态。
The milk is sour.
牛奶酸了。
表示变为酸的状态，常用于变质。
The cream went sour after a few days.
奶油几天后变酸了。
用于描述情绪，意为不悦、恼怒。
He is sour about losing the game.
他对输了比赛感到愠怒。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
酸味
The lemon gave the drink a sour taste.
柠檬让这杯饮料有了酸味。
变酸的牛奶
Sour milk is not safe to drink.
变酸的牛奶不宜饮用。
不友好的表情
He gave me a sour look when I asked for help.
我请他帮忙时，他不友好地看了我一眼。
走调的音
The saxophone hit a sour note during the solo.
萨克斯在独奏时吹了一个走调的音。
过酸的土壤
Gardeners often add lime to sour soil.
园丁经常在过酸的土壤里加石灰。
变得不顺利
The deal turned sour when the price dropped.
价格下跌后，这笔交易变得不顺利了。
酸葡萄心理；因得不到而贬低
He said the prize wasn't worth winning, but I think that's just sour grapes.
他说这个奖不值得拿，但我觉得那不过是酸葡萄心理。
（关系、计划等）变糟，恶化
Their friendship went sour over money.
他们的友谊因为钱的问题而变糟了。
给某人留下坏印象；使某人反感
The company's response left a sour taste in my mouth.
公司的回应让我心里不是滋味。
葡萄是酸的。
From Aesop's fable 'The Fox and the Grapes.' The fox cannot reach the grapes, so he tells himself they are sour. This is the origin of the idiom 'sour grapes,' meaning to criticize something you want but cannot have.
出自伊索寓言《狐狸与葡萄》。狐狸够不到葡萄，便自语说葡萄是酸的。这个说法是习语 sour grapes（酸葡萄）的来源，用来表示因得不到而贬低某物。
我是酸味糖果，尝起来那么甜，然后我会有点生气。
From 'Sour Candy' by Lady Gaga and BLACKPINK (2020). The lyric plays on sour as both a taste and a bad mood: the singer is sweet but can quickly turn sharp and hostile.
出自 Lady Gaga 和 BLACKPINK 的歌曲《Sour Candy》（2020）。歌词玩味 sour 一词的双关：既指酸味，也指坏脾气——歌手甜美，但也会很快变得尖刻和敌对。
Use sourest naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把sour联想成中文“酸”的谐音：咬一口柠檬，sour酸得眯眼。
语域：neutral 常见场景：谈论食物味道、烹饪和食谱、日常购物或用餐 表示“酸的、有酸味”这一义项时，sour 属于中性词，通常用于日常谈论水果、柠檬、酸奶等食物的味道，在烹饪和菜谱中也很常见。
与 sour (/ˈsaʊər/) 押韵的词常拼作 -our 或 -ower，如 hour、flour、flower、power、tower、devour 等，均发 /aʊər/。注意拼写相似的 pour (/pɔːr/，倒、灌) 和 tour (/tʊr/，旅行) 发音不同。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.