Synonyms of antisocial

1 Syllable
cold
2 Syllables
withdrawn, dried-up, thoughtless
3 Syllables
tightlipped, hermit-like, reserved, standoffish, secluse, retiring, remote, unthoughtful, austere, hot-headed, unfriendly, cynical, asocial, ascetic, taciturn
4 Syllables
eremetic, hermitical, misanthropic, hermitlike, reclusive, seclusive, eremitic, unsociable, introverted, solitary, unneighborly, anti-social
5 Syllables
misanthropical, unexpressive, alienated
7 Syllables
uncommunicative, incommunicative