unsocial
A PREFERENCE FOR SOLITUDE; OR, A MOTIVATION AGAINST SOCIAL INTERACTION OR PARTICIPATION
Asocial; Asocial personality; Asocial behavior; Asocial behaviour; Unsocial; Nonsocial
If someone works unsocial hours, they work late at night, early in the morning, at weekends, or on public holidays. In Britain, people are often paid extra for working unsocial hours. (BRIT)
ADJ