Answer: whoo

AnswerCrossword Clue
WHOO"That's awesome!"
WHOOExclamation of elation
WHOOOwl sound
WHOOElation exclamation
WHOOShout of delight
WHOOShout of excitement
WHOOTu-whit, tu-....
WHOOBirdcall.
WHOOOwl's cry.
WHOOAvian sound.
WHOOBird's cry.
WHOOOwl's question?
WHOOOwl's cry
WHOOCry of excitement