| bland(adjective, dull, weak, smooth, gentle) |
| dull(adjective, calm, quiet, weak, simple) |
| flat(adjective, calm, dull, quiet, weak) |
| humdrum(adjective, dull, weak, simple, flat) |
| dreary(adjective, dull, simple, flat, dark) |
| insipid(adjective, dull, weak, simple, flat) |
| boring(adjective, dull, quiet, weak, simple) |
| monotonous(adjective, dull, quiet, weak, simple) |
| apathetic(adjective, calm, dull, quiet, weak) |
| bombast |
| dim(adjective, dull, weak, flat, dark) |
| fustian |
| ho-hum(adjective, dull, weak, smooth, simple) |
| jejune(adjective, dull, weak, flat, ordinary) |
| lifeless(adjective, calm, dull, quiet, weak) |
| not good |
| pedestrian(adjective, dull, simple, plain, informal) |
| tedious(adjective, dull, weak, simple, flat) |
| vapid(adjective, dull, weak, simple, flat) |
| tasteless(adjective, dull, weak, flat, plain) |