| insipid(adjective, good, dull, weak, kind) |
| dull(adjective, quiet, weak, kind, soft) |
| boring(adjective, dull, weak, flat, plain) |
| flat(adjective, dull, quiet, weak, kind) |
| uninteresting(adjective, dull, weak, flat, plain) |
| vapid(adjective, good, dull, weak, kind) |
| mild(adjective, nature, calm, dull, quiet) |
| tasteless(adjective, dull, weak, taste, flat) |
| soft(adjective, nature, calm, dull, quiet) |
| gentle(adjective, nature, calm, dull, quiet) |
| prosaic(adjective, dull, weak, flat, ordinary) |
| tedious(adjective, dull, weak, flat, plain) |
| smooth(adjective, calm, dull, quiet, style) |
| wishy-washy(adjective, good, dull, weak, excite) |
| suave(adjective, style, kind, smooth, easy) |
| humdrum(adjective, dull, weak, plain, mild) |
| calm(adjective, dull, quiet, cool, weak) |
| benign(adjective, nature, calm, weak, kind) |
| jejune(adjective, good, dull, weak, kind) |
| savorless(adjective, dull, weak, flat, boring) |