| dull(adjective, simple, tough, flat, excite) |
| prosaic(adjective, dull, simple, tough, flat) |
| commonplace(adjective, dull, simple, flat, plain) |
| flat(adjective, dull, simple, tough, excite) |
| common(adjective, dull, simple, flat, plain) |
| ordinary(adjective, dull, simple, flat, plain) |
| boring(adjective, dull, simple, flat, plain) |
| hackneyed(adjective, dull, simple, flat, plain) |
| tedious(adjective, dull, simple, flat, plain) |
| trite(adjective, dull, simple, flat, plain) |
| humdrum(adjective, dull, simple, flat, plain) |
| insipid(adjective, dull, flat, stupid, ordinary) |
| routine(adjective, dull, simple, flat, plain) |
| tiresome(adjective, flat, stupid, ordinary) |
| uninventive(adjective, dull, boring, rich) |
| tired(adjective, dull, flat, stupid, ordinary) |
| vapid(adjective, dull, simple, flat, plain) |
| lifeless(adjective, dull, simple, tough, flat) |
| sterile(adjective, dull, excite, boring) |
| uninteresting(adjective, dull, flat, heavy, ordinary) |