adjective. Having or showing a lack of desire for the company of others.

Not social; not adapted to society; not tending to sociability; reserved; unsociable.

adjective. Not social.

adjective. Inhospitable.

adjective. not seeking or given to association; being or living without companions

"The impetus to development Kant found in the restlessness arising from the conflict in man between his social and antisocial tendencies, in what he calls the unsocial sociableness of man, his desire for gain and power, his greed and competitiveness."

alone  antisocial  asocial  lone  lonely  

absent-minded  altruistic  discourteous  distrustful  ill-natured  

aloof  anchoretic  anchoritic  antisocial  autistic