| tedious(adjective, dull, simple, plain, ordinary) |
| dull(adjective, simple, flat, plain, ordinary) |
| tiresome(adjective, dull, boring, disagreeable, tedious) |
| humdrum(adjective, dull, simple, clean, plain) |
| monotonous(adjective, dull, simple, plain, ordinary) |
| prosaic(adjective, dull, bad, simple, flat) |
| uninteresting(adjective, dull, boring, tedious, dreary) |
| wearisome(adjective, dull, boring, tedious, dreary) |
| flat(adjective, dull, weak, smooth, simple) |
| insipid(adjective, dull, uninteresting) |
| jejune |
| slow |
| deadening |
| irksome(adjective, dull, simple, clean, plain) |
| blah(adjective, dull, weak, smooth, simple) |
| dead(adjective, dull, simple, flat, clean) |
| dreary |
| dry(adjective, dull, simple, flat, clean) |
| vapid(adjective, dull, simple, flat, clean) |
| heavy(adjective, dull, boring, tired, tedious) |