| tangy(adjective, unpleasant, bitter, critical, unkind) |
| testy(keen, sharp, unpleasant, lively, unfriendly) |
| tough(adjective, strong, hard, severe, harsh) |
| unbending(adjective, close, strong, hard, tough) |
| unsparing(adjective, close, strong, hard, tough) |
| vinegary(adjective, sharp, harsh, unpleasant, bitter) |
| with a kick(expression, adjective, idiom, sharp, unpleasant) |
| abusive(adjective, severe, bleak, stark, austere) |
| acetic(adjective, severe, sharp, harsh, unpleasant) |
| acetose(adjective, sharp, unpleasant, bitter, critical) |
| acidulated(adjective, sharp, unpleasant, bitter, sour) |
| astrictive |
| bad(adjective, sharp, unpleasant, bitter, sour) |
| basic(adjective, severe) |
| bitter as gall(expression, idiom) |
| blunt(adjective, severe) |
| briny(adjective, sharp, unpleasant, bitter, sour) |
| brusque(adjective, severe) |
| bugleweed |
| bullheaded(adjective, strong, hard, tough, severe) |