| so-so(adjective, moderate, indifferent, ordinary, modest) |
| square(adjective, simple, flat, clean, plain) |
| stale(adjective, simple, clean, plain, ordinary) |
| tame(adjective, simple, flat, clean, plain) |
| tedious(adjective, dull, simple, flat, clean) |
| third-rate |
| tiresome(adjective, dull, boring, routine, tedious) |
| toneless(adjective, dull, boring, routine, tedious) |
| treadmill(adjective, dull, boring, routine, tedious) |
| unexciting(dull, indifferent, ordinary, modest, boring) |
| unimaginative |
| uninspiring(adjective, simple, flat, clean, plain) |
| unpretentious |
| unspectacular |
| unvaried(adjective, dull, boring, routine, tedious) |
| vanilla(adjective, dull, simple, clean, plain) |
| vapid(adjective, simple, flat, clean, plain) |
| wearisome(adjective, dull, boring, routine, tedious) |
| white-bread(adjective, dull, boring, routine, tedious) |
| yawn(adjective, simple, flat, clean, plain) |