Definition of 'caustic'

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Noun

1. any chemical substance that burns or destroys living tissue

Adjective

1. 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"; "a vitriolic critique"
      Synonyms: acerb acerbic acid acrid bitter blistering sulfurous sulphurous venomous virulent vitriolic
2. of a substance, especially a strong acid; capable of destroying or eating away by chemical action
      Synonyms: corrosive erosive vitriolic mordant

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