Meaning of “(as) clear as mud” in the English Dictionary

british dictionary

"(as) clear as mud" in British English

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(as) clear as mud

humorous

very difficult to understand:

His instructions were as clear as mud.

(Definition of “(as) clear as mud” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"(as) clear as mud" in American English

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(as) clear as mud

humorous very difficult to understand:

The computer manual was as clear as mud, so we stopped reading it.

(Definition of “(as) clear as mud” from the Cambridge Academic Content Dictionary © Cambridge University Press)

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