Synonyms of unpopular

1 Syllable
out, weird, gross, drip
2 Syllables
loser, lousy, scorned, loathed, hated, lousier, wimpy, shunned, nerdy, creepy, dumpy
3 Syllables
avoided, unloved, disliked, obnoxious, detested, unvalued, abhorred, rejected, despised, unwanted
4 Syllables
ostracized, unwelcome, unlikable, disesteemed, disfavored, execrated, unaccepted, ungraciousness, uninvited, unbeloved, undesired, unwished-for
5 Syllables
undesirable, unwelcomeness, unattractive
6 Syllables
inhospitality, inhospitableness