| platitude(noun, dull, dullness, triviality, levity) |
| commonplace(noun, dull, idea, dullness) |
| triviality(dull, dullness, commonplace, nonsense, absurdity) |
| flatness(dull, dullness, commonplace, feebleness) |
| insipidity(dull, dullness, commonplace, feebleness) |
| shallowness(noun, stupidity, foolishness, triviality, levity) |
| triteness(dull, dullness, commonplace, triviality, levity) |
| vapidity(dull, dullness, commonplace, feebleness) |
| banality(dull, dullness, commonplace, triviality) |
| boiler plate(expression, dull, dullness, commonplace) |
| bromide(dull, dullness, commonplace, triviality, levity) |
| corn(noun, dull, dullness, commonplace, triviality) |
| evenness(dull, dullness, commonplace, boredom) |
| hackneyed saying(expression, dull, dullness, commonplace) |
| monotony(dull, dullness, commonplace, boredom) |
| motto(dull, dullness, commonplace, triviality, levity) |
| old story(expression, dull, dullness, commonplace) |
| overused saying(expression, dull, dullness, commonplace) |
| prosaicism(dull, dullness, commonplace, triviality, levity) |
| shibboleth(dull, dullness, commonplace, triviality, levity) |