Read the dictionary definition of acerb. All definitions for this word.
1. 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
2. sour or bitter in taste