"apologising" in the verb sense
1. apologize, apologise, excuse, rationalize, rationalise
defend, explain, clear away, or make excuses for by reasoning
"rationalize the child's seemingly crazy behavior"
"he rationalized his lack of success"
2. apologize, apologise
acknowledge faults or shortcomings or failing
"I apologized for being late"
"He apologized for the many typoes"
Source: WordNet® (An amazing lexical database of English)
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