| unstimulating(adjective, dull, weak, plain, mild) |
| unvaried(adjective, dull, bad, flat, stupid) |
| usual(adjective, dull, flat, ordinary, dry) |
| usual thing(expression, adjective, dull, flat, ordinary) |
| vanilla(adjective, dull, weak, plain, mild) |
| waterish(adjective, dull, weak, plain, mild) |
| watery(adjective, dull, weak, plain, mild) |
| weak(adjective, dull, plain, mild, boring) |
| weariful(adjective, dull, bad, simple, boring) |
| wearisome(adjective, dull, simple, flat, stupid) |
| well-worn(adjective, dull, bad, flat, stupid) |
| wimpy(adjective, dull, weak, plain, mild) |
| wishy-washy(adjective, dull, weak, plain, mild) |
| workaday |
| worn-out(adjective, flat, ordinary, dry, boring) |
| yawner(bad, disagreeable, uninspired, uninspiring, nowhere) |
| OK |
| acerbic(adjective, ironic, deadpan, understated, laconic) |
| apathetic(adjective, dull, simple, dreary, uninteresting) |
| arcane(adjective, ironic, deadpan, understated, laconic) |