Synonyms:
explain, explicate
Meaning: make plain and comprehensible; "He explained the laws of physics to his students"
Synonyms:
explain
Meaning: define; "The committee explained their plan for fund-raising to the Dean"
Synonyms:
excuse, explain
Meaning: serve as a reason or cause or justification of; "Your need to sleep late does not excuse your late arrival at work"; "Her recent divorce may explain her reluctance to date again"