Definitions:

1. a statement in explanation of some action or belief noun
   • They gave no justification in response to our questions.
2. something, such as a fact or circumstance, that shows an action to be reasonable or necessary noun
   • They considered misrule a justification for revolution.
3. the act of defending or explaining or making excuses for by reasoning noun
   • The justification of barbarous means by holy ends is unacceptable to this administration.