Used attributively before a noun to qualify something as nonsensical or worthless (e.g., "a hooey idea").
The committee rejected his hooey proposal outright.
Le comité a rejeté d’emblée sa proposition bidon.
Used colloquially as an exclamation expressing disbelief or dismissal.
n’importe quoiLangage familier. "Hooey! You expect me to believe that?"
"N’importe quoi ! Tu t’attends à ce que je croie ça ?"