Answer:

SIT

AnswerCrossword Clue
SIT".. on it!": Fonzie
SITMeet
SITObedience-school command
SITCommand to Fido
SITConvene
SITDo nothing
SITDown and up leader
SITEntreaty for Fido
SITBe in session
SITCongregate
SITDon't just stand there!
SITRequest to a guest
SITHoliday contraction
SITBe a couch potato, say
SITGo to the bench
SITCommand to Ubu
SITPark your carcass
SITPut an end to something?
SITModel
SITRemain motionless
SIT"At ease," to Rex
SITPose for a portrait
SITTake a load off
SITObedience school order
SITPerch
SITMake a lap
SITRemain unused
SITOrder to Rex
SITCommand to Rover
SITUse a divan
SITMind the kids
SITOblige a portraitist
SITUse a pouffe
SITGo unused
SITMind your minors
SITObedience school command
SITUse a chair
SITKennel command
SITMind a minor
SITAttend to tykes