Noun | 1. | acid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt |
| 2. | acid - street name for lysergic acid diethylamideSynonyms: back breaker, battery-acid, Elvis, loony toons, Lucy in the sky with diamonds, window pane, superman, Zen, pane, dose, dot |
Adj. | 1. | acid - harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"Synonyms: blistering, caustic, sulfurous, sulphurous, vitriolic, venomous, acerb, acerbic, acrid, bitter, virulent |
| 2. | acid - containing acid; "an acid taste" |
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