Read the dictionary definition of caustic. All definitions for this word.
1. any chemical substance that burns or destroys living tissue
2. of a substance, especially a strong acid; capable of destroying or eating away by chemical action
3. harsh or corrosive in tone
1. an acerbic tone piercing otherwise flowery prose
2. a barrage of acid comments
3. her acrid remarks make her many enemies
4. bitter words
5. blistering criticism
6. caustic jokes about political assassination, talk-show hosts and medical ethics
7. a sulfurous denunciation
8. a vitriolic critique