Answer: yoyo

AnswerCrossword Clue
YOYOMa with a cello
YOYOUp-and-down
YOYOFluctuate wildly
YOYOGo up and down
YOYOCellist .. Ma
YOYOToy on a string
YOYOWrist exercise provider
YOYOIt may be used to walk the dog
YOYOIt's used to "walk the dog"
YOYONeed for "walking the dog"
YOYOIt can be used to "go around the world"
YOYOIt has its ups and downs
YOYOToy with a string attached
YOYOIt may be needed to walk the dog
YOYOFluctuate repeatedly
YOYOSomething used to walk the dog
YOYOYou may walk the dog with it
YOYOStringed toy
YOYOUp-and-down toy
YOYOGo back and forth
YOYOKook
YOYOSwing up and down
YOYODither
YOYOSpinning toy
YOYOCellist Ma
YOYOThing on a string
YOYOSpooled toy
YOYODuncan toy
YOYOBe wildly unstable
YOYOLunkhead
YOYOWhat to walk the dog with
YOYOInept one
YOYODing-a-ling
YOYOMa in music
YOYONinny
YOYOSpool-on-a-string toy
YOYOShow uncertainty
YOYOToy that goes "around the world"
YOYOVacillate
YOYOToy once called a bandelore