| boring(adjective, dull, flat, tedious) |
| dull(adjective, boring, uninteresting, tedious, dreary) |
| tedious(adjective, dull, flat, boring) |
| uninteresting(adjective, dull, boring, tedious, flat) |
| humdrum(adjective, dull, weak, simple, flat) |
| monotonous(adjective, dull, boring, tedious, uninteresting) |
| ordinary(adjective, boring, dull, flat) |
| prosaic(adjective, dull, bad, weak, simple) |
| vapid(adjective, dull, weak, simple, flat) |
| common(adjective, boring, flat, ordinary) |
| insipid(adjective, dull, weak, flat, plain) |
| lifeless(adjective, dull, weak, simple, flat) |
| tiresome(adjective, dull, flat, stupid, ordinary) |
| unexciting(adjective, dull, weak, plain, mild) |
| commonplace(adjective, dull, simple, flat, plain) |
| dreary(adjective, dull, flat, stupid, ordinary) |
| flat(adjective, dull, weak, simple, plain) |
| jejune(adjective, dull, flat, stupid, ordinary) |
| stale(adjective, dull, simple, flat, clean) |
| dead(adjective, dull, simple, flat, plain) |