clear as mud
Murky, obscure, totally unclear, as in The translation of these directions is clear as mud. This ironic phrase always indicates that something is far from clear. [Early 1800s]
DON’T VACILLATE! VANQUISH THIS WORD OF THE DAY QUIZ!
Words nearby clear as mud
Example sentences from the Web for clear as mud
"I thought so, Doctor," says Mrs. Helpalong, and this clear-as-mud evidence against my comfort is reiterated to my mother.