adjective

thinking only of oneself, without regard for the feelings or desires of others; self-centred.

egocentric loners with an overinflated sense of self-worth

self-centred,egomaniacal,self-interested,egotistic,egoistic,selfish,self-seeking,self-regarding,self-absorbed,self-obsessed,self-loving,narcissistic,vain,conceited,proud,self-important

noun

an egocentric person.