won't hold water

to be inadequate, insubstantial, or ill-conceived. Sorry, your ideas won't hold water. Nice try, though. The prosecution's case wouldn't hold water, so the defendant was released.

Common Names:

Name	Pronounced	Usage
Larunda	-	Roman Mythology
Jamsheed	-	Persian, Persian Mythology
Lionel	lee-o-NEL (French), LIE-nəl (English)	French, English
Beaver	['bi:və]
Signe	SEENG-ne (Swedish, Norwegian), SEE-ne (Danish)	Swedish, Norwegian, Danish
Miyako	mee-yah-ko	Japanese