| pale-faced(adjective, light, fair, pale, white) |
| plain(adjective, dull, simple, soft, obscure) |
| plebeian(adjective, dull, mean, simple, rough) |
| plodding(adjective, dull, boring, tedious, dreary) |
| pointless(adjective, dull, weak, flat, ordinary) |
| poker-faced(adjective, cool, cold, indifferent, detached) |
| poor(adjective, dull, mean, light, soft) |
| remote(adjective, cool, cold, indifferent, detached) |
| repetitious(adjective, dull, flat, stupid, ordinary) |
| routine(adjective, dull, simple, flat, plain) |
| somber |
| sombre(adjective, dull, flat, boring, lifeless) |
| stale(adjective, dull, mean, weak, simple) |
| tasteless(adjective, dull, weak, thin, boring) |
| tepid(adjective, dull, boring, uninteresting) |
| threadbare(adjective, dull, beat, dirty, common) |
| tiresome(adjective, dull, flat, stupid, ordinary) |
| tiring(adjective, dull, flat, stupid, dead) |
| trite(adjective, dull, mean, simple, flat) |
| unlively(adjective, dreary, monotonous) |