jus·ti·fi·ca·tion
/ˌʤʌstəfəˈkeɪʃən/ noun plural jus·ti·fi·ca·tions
: an acceptable reason for doing something : something that justifies an action [count] ▪ He tried to present a justification for his behavior. ▪ There is no possible justification for what she did. [noncount] ▪ His behavior is without justification. ▪ He told lies in justification of his behavior. [=in order to make people think that his behavior was reasonable] ▪ She noted with some justification that other people had experienced similar problems. [=it was not unreasonable of her to note that other people had experienced similar problems]