| blah(adjective, dull, weak, simple, flat) |
| deadening |
| dry-as-dust |
| lacklustre |
| stuffy(adjective, dull, flat, excite, heavy) |
| stupid(adjective, dull, simple, flat, slow) |
| trite(adjective, dull, simple, flat, plain) |
| weariful(adjective, dull, simple, excite, boring) |
| wearing(adjective, dull, boring, irritating, exasperating) |
| awful(adjective, sickness, ache, anguishes) |
| common(adjective, boring, dull, flat, ordinary) |
| endless(adjective, dull, monotonous) |
| lengthy(adjective, slow, boring, long, rambling) |
| long-drawn-out(adjective, dull, boring, late, dreary) |
| unpleasant(adjective, sickness, ache, anguishes) |
| weary(adjective, excite) |
| wishy-washy(adjective, dull, weak, plain, mild) |
| arduous(adjective, dull, difficult, tender, boring) |
| biting(adjective, tender, raw, painful, sickness) |
| caustic(adjective, tender, raw, painful, sickness) |