The Collaborative International Dictionary of English v.0.48:

Egoistic \E`go*is"tic\, Egoistical \E`go*is"tic*al\, a.
   Pertaining to egoism; imbued with egoism or excessive
   thoughts of self; self-loving.
   [1913 Webster]

         Ill-natured feeling, or egoistic pleasure in making men
         miserable.                               --G. Eliot.
   [1913 Webster]

WordNet (r) 3.0 (2006):

egoistical
    adj 1: limited to or caring only about yourself and your own
           needs [syn: egoistic, egoistical, egocentric,
           self-centered, self-centred] [ant: altruistic,
           selfless]