Answer: WOWIE

AnswerCrossword Clue
WOWIE"That's the coolest thing!"
WOWIE"Holy cow!"
WOWIECry of wonderment
WOWIE"Unbelievable!"
WOWIE"Gosh, will you look at that!"
WOWIEMaui ... (marijuana from Hawaii, in slang)
WOWIE"This is wonderful!"
WOWIE"Amazing!"
WOWIE"Super!"
WOWIE"Who'd-a thunk?"
WOWIE"Cowabunga!"
WOWIEDelighted shout
WOWIEExclamation of delight
WOWIEExclamation of surprise
WOWIE"Get a load of that!"
WOWIE"Holy Toledo!"
WOWIE"Zounds!"