[syn: apologize, apologise]
The Collaborative International Dictionary of English v.0.48:
apologise \apologise\ v.
   1. same as apologize.
   Syn: apologize, excuse, justify, rationalize
        [WordNet 1.5]
WordNet (r) 3.0 (2006):
apologise
    v 1: defend, explain, clear away, or make excuses for by
         reasoning; "rationalize the child's seemingly crazy
         behavior"; "he rationalized his lack of success" [syn:
         apologize, apologise, excuse, justify,
         rationalize, rationalise]
    2: acknowledge faults or shortcomings or failing; "I apologized
       for being late"; "He apologized for the many typoes" [syn:
       apologize, apologise]