Answer: isaidso

AnswerCrossword Clue
ISAIDSODiscussion-ending words
ISAIDSOCommon parental "explanation"
ISAIDSOParent's words after "Because"
ISAIDSOParent's explanation, perhaps
ISAIDSOLess than explanatory parental explanation
ISAIDSOFrequent declaration after "Because"
ISAIDSOParent's peremptory "reason"
ISAIDSO"Why?" response (with "Because")
ISAIDSOAnswer to a tot's "Why?"
ISAIDSOAuthoritarian's reason