ASOCIAL
antisocial, asocial
(adjective) hostile to or disruptive of normal standards of social behavior; “criminal behavior or conduct that violates the rights of other individuals is antisocial”; “crimes...and other asocial behavior”; “an antisocial deed”
asocial
(adjective) given to avoiding association with others; “bears are asocial secretive animals”; “are you asocial or do you just enjoy living in the Antarctic?”
Source: WordNet® 3.1
Etymology
Adjective
asocial (comparative more asocial, superlative most asocial)
not social
not sociable
(perhaps colloquial, sometimes, proscribed) antisocial
Source: Wiktionary