Answer: noidea

AnswerCrossword Clue
NOIDEA"You got me there"
NOIDEANary a clue
NOIDEA"I'm stumped"
NOIDEA"I have ..!" ("You've got me!")
NOIDEA"I'm stumped!"
NOIDEA"I haven't got a clue"
NOIDEAShrug, verbalized
NOIDEAHave ... (be unaware).
NOIDEA"I haven't the foggiest"
NOIDEAComment from the clueless
NOIDEA"Heck if I know"
NOIDEA"???"
NOIDEA"Hell if I know"
NOIDEA'Beats me'
NOIDEA'I haven't a clue'
NOIDEA"Don't ask me"
NOIDEAYou're unsure if you have it
NOIDEA[shrug]
NOIDEA"Haven't a clue"
NOIDEA"Search me"
NOIDEA"I'm clueless"
NOIDEAYou're in the dark when you have this
NOIDEAWhat the clueless have?
NOIDEA"I haven't a clue"
NOIDEA"I have ..." (verbal shrug)
NOIDEA"Beats me!"
NOIDEA"Haven't the foggiest"
NOIDEA[Shrug]
NOIDEA"Got me"
NOIDEAShrugger's comment
NOIDEA"Haven't a clue!"
NOIDEA"Beats me"
NOIDEAI don't know