(as) clear as mud
US /əz klɪr əz mʌd/
UK /əz klɪr əz mʌd/
1.
aussi clair que de la boue, incompréhensible
very difficult to understand; not clear at all
:
•
His explanation of the new policy was as clear as mud.
Son explication de la nouvelle politique était aussi claire que de la boue.
•
The instructions for assembling the furniture were as clear as mud, so I had to guess.
Les instructions pour assembler les meubles étaient aussi claires que de la boue, alors j'ai dû deviner.