1. sour, sourness, tartness, taste, taste sensation, gustatory sensation, taste perception, gustatory perception

usage: the taste experience when vinegar or lemon juice is taken into the mouth

2. acerbity, tartness, sourness, sour, acidity

usage: a sharp sour taste

3. bitterness, acrimony, acerbity, jaundice, tartness, thorniness, disagreeableness

usage: a rough and bitter manner

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