unsocial

Not social.

• The process which, if not checked, will abolish Man, goes on apace among Communists and Democrats no less than among Fascists. […] Once we killed bad men: now we liquidate unsocial elements.

Not seeking or showing the desire for the company of others; inhospitable.

• The cupbearer shrugged up his shoulders in displeasure. "I thought to have lodged him in the solere chamber," said he; "but since he is so unsocial to Christians, e'en let him take the next stall to Isaac the Jew's.