1) Abusive 2) Acid 3) Blistering 4) Caustic 5) Corrosive 6) Destructive 7) Sulfurous 8) Sulphurous 9) Unpleasant 1) Acerb 2) Acerbic 3) Acid 4) Acrid 5) Bitter 6) Blistering 7) Caustic 8) French word used in English 9) Harsh or corrosive in tone 10) Scathing 11) Sulfurous 12) Sulphurous 13) Unpleasant 14) Venomous 15) Virulent 
caustic or hostile
• (a.) Of or pertaining to vitriol; derived from, or resembling, vitriol; vitriolous; as, a vitriolic taste. Cf. Vitriol.
Vit`ri·ol'ic adjective [ Confer French vitriolique .] (Chemistry) Of or pertaining to vitriol; derived from, or resembling, vitriol; vitriolous; as, a vitriolic taste. Confer Vitriol . Vitriolic acid (Old Chem.) , (a) 
vitriolic 1. Harsh or corrosive in tone; very caustic; scathing: 'He hurled vitriolic criticism at her performance.' Here are other examples of vitriolic statements or comments: 'an acerbic (vitriolic) tone piercing otherwise flowery prose'; 'a barrage of acid (vitriolic) comments'; 'her acrid (vitriolic) remarks make her many enemies'; 'bitter (v...
[SAT terms] harsh, bitter, or malicious in tone