Synonyms of banal

1 Syllable

stock, blah, bland, clichéd, flat, dumb

2 Syllables

plebeian, prosaic, yawner, zero, trifling, inapt, cornball, tedious, stupid, blandest, ho-hum, snoozer, trite, tired, corny, square, hohum, stocker, tripe, well-worn, painless, workday, cornfed, proser, blander, humdrum, corniest, cornier, prosy, old-saw, prosier, vapid, triter, common, tritest, sapless, hokey, hackneyed, stale, nothing

3 Syllables

insipid, bromidic, jejune, unhandy, day-to-day, innocuous, working-class, pedestrian, subfuscous, unbeauteous, commonest, cliché-ridden, noplace, pabulum, nowhere, old-chestnut, watery, workaday, inadept, mundane

4 Syllables

stereotypic, warmed-over, stereotyped, overused, unappealing, mass-produced, yesterday's, conventional, ordinary, readymade, ill-adapted, unproficient, everyday, unenjoyable, wishy-washy, characterless

5 Syllables

institutional, stereotypical, platitudinal, unstimulating, platitudinous, unoriginal, uninteresting, unentertaining

7 Syllables

unimaginative