1. (noun) 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
Synonyms: battery-acid, window pane, back breaker, superman, dose, dot, pane, loony toons
Antonyms: amphoteric, sweet, alkaline, amphiprotic, pleasant, alkalic
2. (adj) acid, back breaker, battery-acid, dose, dot, Elvis, loony toons, Lucy in the sky with diamonds, pane, superman, window pane, Zen
street name for lysergic acid diethylamide
Synonyms: back breaker, superman, dot, battery-acid, paneling, window glass, sexually transmitted disease, venereal infection, social disease, venereal disease, pane, panelling, window pane, dosage, dose, acid, pane of glass, point, demigod, loony toons, dit
Antonyms: alkalic, amphiprotic, alkaline, pleasant, amphoteric, sweet
3. (adj) acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic
harsh or corrosive in tone
Synonyms: virulent, blistering, red-hot, vitriolic, hot, blistery, acerbic, stifling, sulphurous, acidic, acrimonious, caustic, mordant, acidulous, venomous, astringent, sulfurous, acrid, deadly, acid, corrosive, pungent, biting, bitter, sultry, acidulent, acerb, erosive
Antonyms: sweet, pleasant, alkaline, alkalic, amphiprotic, amphoteric
4. (adj) acidic, acid, acidulent, acidulous
being sour to the taste
Synonyms: acidic, acrid, acidulent, acid, sulphurous, caustic, bitter, virulent, acidulous, blistering, acerbic, vitriolic, acerb, sulfurous
Antonyms: alkaline, pleasant, alkalic, sweet, amphoteric, amphiprotic
5. (adj) acid
having the characteristics of an acid
Synonyms: acidic, acrid, acidulent, blistering, sulphurous, sulfurous, acidulous, bitter, virulent, caustic, acerbic, vitriolic, acerb
Antonyms: amphoteric, pleasant, sweet, amphiprotic, alkalic, alkaline
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Synonyms and Antonyms of ACID 
