| lifeless(adjective, dull, flat, stupid, dry) |
| like a dinosaur(expression, adjective, idiom, dull, hard) |
| mawkish(adjective, dull, hard, tired, old) |
| mildewed(adjective, dull, set, flat, silly) |
| monotonous(adjective, dull, flat, stupid, dead) |
| nowhere(adjective, dull, bad, flat, stupid) |
| obsolete |
| ordinary(adjective, dull, flat, standard, commonplace) |
| out(adjective, dull, hard, tired, old) |
| out-of-date(adjective, dull, hard, common, tired) |
| outworn |
| passé(adjective, dull, hard, tired, old) |
| past(adjective, dull, hard, tired, old) |
| pedestrian(adjective, dull, flat, tired, commonplace) |
| persistent |
| plebeian(adjective, dull, flat, stupid, dead) |
| ragged |
| ready-made(adjective, dull, set, flat, silly) |
| recurring |
| repetitious(adjective, dull, hard, flat, stupid) |