| ho-hum(adjective, dull, uninteresting) |
| spiritless(adjective, dull, weak, kind, soft) |
| unimaginative(adjective, dull, flat, stupid, ordinary) |
| arid(adjective, dull, flat, stupid, ordinary) |
| characterless(adjective, dull, weak, flat, stupid) |
| common(adjective, dull, hard, flat, stupid) |
| innocuous(adjective, good, dull, excite, uninteresting) |
| soft(adjective, dull, light, weak, kind) |
| unexciting(adjective, dull, weak, plain, mild) |
| colorless(adjective, dull, light, weak, soft) |
| pedestrian(adjective, dull, stupid, ordinary, boring) |
| prosy(adjective, dull, weak, flat, ordinary) |
| savourless |
| subdued(adjective, calm, dull, kind, smooth) |
| thin(adjective, dull, light, weak, soft) |
| tired(adjective, dull, hard, flat, stupid) |
| unappetizing(adjective, dull, weak, flat, nasty) |
| colourless |
| diluted(adjective, dull, weak, thin, bland) |
| feeble(adjective, calm, dull, light, weak) |