| boring(adjective, dreary, colorless, tedious, drab) |
| tedious(adjective, boring, uninteresting, dreary, monotonous) |
| flat(adjective, calm, quiet, set, hard) |
| dim(verb, adjective, action, characteristic, quiet) |
| tiresome(adjective, excite, slow, stupid, dry) |
| uninteresting(adjective, boring, tedious, dreary, monotonous) |
| slow(verb, adjective, stop, upset, trouble) |
| obtuse(noun, adjective, simple, sharp, slow) |
| dreary(adjective, excite, warm, unhappy, dark) |
| prosaic(adjective, set, weak, simple, tough) |
| monotonous(adjective, boring, uninteresting, uneventful, tedious) |
| stupid(adjective, simple, flat, rough, slow) |
| drab(adjective, characteristic, hard, weak, simple) |
| blunt(verb, adjective, action, quiet, check) |
| dead(adjective, hard, weak, simple, flat) |
| humdrum(adjective, weak, simple, excite, slow) |
| gloomy(adjective, characteristic, bad, obscure, flat) |
| lifeless(adjective, calm, weak, simple, tough) |
| wearisome(adjective, boring, tedious, dreary, lifeless) |
| insipid(adjective, hard, light, weak, kind) |