Answer: behave

AnswerCrossword Clue
BEHAVERefrain from naughtiness
BEHAVEAct mannerly
BEHAVEParental command
BEHAVEComport
BEHAVEParent's demand
BEHAVENanny's warning
BEHAVENanny's cry
BEHAVETeacher's remonstration
BEHAVEAct appropriately
BEHAVE"Oh, .....!" (Austin Powers' line)
BEHAVEPerform
BEHAVEMind Mom
BEHAVEParent's admonition
BEHAVEParent's scolding
BEHAVEBabysitter's request
behaveto act properly
behaveto act or react in a certain way
behaveto conduct (oneself) in a proper manner
behaveto act properly
BEHAVEBabysitter's admonition
BEHAVEAct properly
BEHAVEDo it right!
BEHAVEAdmonishment to kids
BEHAVENot fool around
BEHAVEMind the sitter
BEHAVEMind one's manners
BEHAVEMind one's p's and q's
BEHAVEPart of an admonition by Austin Powers
BEHAVEAdmonishing word from mom
BEHAVEComport oneself properly
BEHAVECalm one's storm
BEHAVEAct
BEHAVE"Don't act up!"
BEHAVEToe the line
BEHAVE"Stop acting up!"
BEHAVEDo the right thing.
BEHAVEAct.