adjective

having no friends; alone.

they have been left virtually friendless

alone,all alone,by oneself,solitary,with no ties,unattached,single,lone,isolated,without friends,companionless,unbefriended,unpopular,unwanted,unloved,uncared-for,abandoned,deserted,rejected,forsaken,outcast,shunned,spurned,lonely,with no one to turn to,forlorn,desolate,lonesome