| ACERB | • acerb adj. (Archaic) Sour, bitter, and harsh to the taste, such as unripe fruit. • acerb adj. (Archaic, figurative) Sharp and harsh in expressing oneself.
 • ACERB adj. bitter and sour, also ACERBIC.
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| ACERBATE | • acerbate adj. (Rare) Embittered; having a sour disposition or nature. • acerbate v. (Transitive) To exasperate; to irritate.
 • acerbate v. (Transitive) To make bitter or sour.
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| ACERBATED | • acerbated v. Simple past tense and past participle of acerbate. • ACERBATE v. to embitter, to irritate.
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| ACERBATES | • acerbates v. Third-person singular simple present indicative form of acerbate. • ACERBATE v. to embitter, to irritate.
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| ACERBATING | • acerbating v. Present participle of acerbate. • ACERBATE v. to embitter, to irritate.
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| ACERBER | • acerber adj. Comparative form of acerb: more acerb. • ACERB adj. bitter and sour, also ACERBIC.
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| ACERBEST | • acerbest adj. Superlative form of acerb: most acerb. • ACERB adj. bitter and sour, also ACERBIC.
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| ACERBIC | • acerbic adj. Tasting sour or bitter. • acerbic adj. (Figurative) Sharp, harsh, biting.
 • ACERBIC adj. bitter and sour, also ACERB.
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| ACERBICALLY | • acerbically adv. Sourly; bitterly. • acerbically adv. In a sarcastic or cynical manner.
 • ACERBIC adv. bitter and sour, also ACERB.
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| ACERBITIES | • acerbities n. Plural of acerbity. • ACERBITY n. sourness.
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| ACERBITY | • acerbity n. Sourness of taste, with bitterness and astringency, like that of unripe fruit. • acerbity n. Harshness, bitterness, or severity.
 • acerbity n. (Countable) Something harsh (e.g. a remark, act or experience).
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| EXACERBATE | • exacerbate v. (Transitive) To make worse (A problem, bad situation, negative feeling, etc.); aggravate; exasperate. • EXACERBATE v. to make more violent, bitter, or severe.
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| EXACERBATED | • exacerbated v. Simple past tense and past participle of exacerbate. • EXACERBATE v. to make more violent, bitter, or severe.
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| EXACERBATES | • exacerbates v. Third-person singular simple present indicative form of exacerbate. • EXACERBATE v. to make more violent, bitter, or severe.
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| EXACERBATING | • exacerbating v. Present participle of exacerbate. • exacerbating adj. That exacerbates.
 • EXACERBATE v. to make more violent, bitter, or severe.
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| EXACERBATION | • exacerbation n. An increase in the severity of something (such as a disease). • EXACERBATION n. the act of exarcebating.
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| EXACERBATIONS | • exacerbations n. Plural of exacerbation. • EXACERBATION n. the act of exarcebating.
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| EXACERBESCENCE | • exacerbescence n. (Archaic) increase of irritation or violence, particularly of a fever or disease. • EXACERBESCENCE n. (archaic) exacerbation.
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| EXACERBESCENCES | • EXACERBESCENCE n. (archaic) exacerbation. | 
| UNACERBIC | • unacerbic adj. Not acerbic. • UNACERBIC adj. not acerbic.
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