| blah(adjective, dull, quiet, weak, flat) |
| run-of-the-mill(adjective, dull, indifferent, ordinary, modest) |
| soporific(adjective, dull, boring, tedious) |
| uninspiring(adjective, dull, weak, plain, mild) |
| arid(adjective, dull, stupid, boring) |
| plain(adjective, dull, weak, mild, indifferent) |
| repetitious(adjective, dull, flat, stupid) |
| familiar(adjective, dull, boring, tedious) |
| stale(adjective, dull, flat, stupid) |
| unimaginative(adjective, dull, heavy, indifferent, ordinary) |
| ho hum(expression, adjective, dull, weak, plain) |
| lackluster(adjective, dull, boring, tedious) |
| mind-numbing(adjective, dull, boring, tedious) |
| prosy(adjective, dull, boring, routine) |
| tired(adjective, dull, boring, tedious) |
| usual(adjective, dull, quiet, flat, slow) |
| big yawn(expression, adjective, dull, boring) |
| colorless(adjective, dull, stupid, boring) |
| deadly(adjective, dull, boring, tedious) |
| dismal(adjective, dull, boring, tedious) |