| vinegary(adjective, difficult, harsh, bitter, sour) |
| acetous(adjective, sour) |
| acetose |
| cantankerous(adjective, difficult, crabby, cranky) |
| acerb |
| tart(adjective, harsh, bitter, sour, acidic) |
| acid(adjective, bitter, sour, tart, acidic) |
| pungent(adjective, bitter, tart, acidic) |
| sour(adjective, difficult, harsh, crabby, cranky) |
| acerbic(adjective, harsh, bitter, sour, tart) |
| acidic(adjective, tart) |
| acidulous(adjective, harsh, bitter, sour, tart) |
| bearish(adjective, difficult, crabby, cranky) |
| bitter(adjective, harsh, sour, tart, acidic) |
| choleric(adjective, difficult, crabby, cranky) |
| cranky(adjective, difficult, crabby) |
| crotchety(adjective, difficult, crabby, cranky) |
| disagreeable(adjective, difficult, crabby, cranky) |
| harsh |
| ornery(adjective, difficult, crabby, cranky) |