Synonyms of unoriginal

2 Syllables
old-saw, trite, cornfed, bonder, castoff, triper, triter, banal, tritest, time-worn, cast-off, musty, olden, well-worn, shopworn, hackneyed
3 Syllables
derived, bromidic, noplace, timeworn, demode, formulaic, counterfeit, cliché-ridden, old-chestnut
4 Syllables
stereotype, plagiaristic, conventional, uncreative, stereotypic, warmed-over, predictable, readymade, mass-produced, stereotyped, yesterday's, overused
5 Syllables
uninventive, stereotypical, platitudinal, derivational, imitative, derivative, platitudinous
7 Syllables
unimaginative