THE IDIOM COLLECTION LEARN & PRACTISE
As clear as mud
Understand the meaning. See it in context. Make it yours.
01 / UNDERSTAND
Meaning in plain English
Very difficult to understand.
02 / SEE IT IN CONTEXT
The expression in a sentence
- The booking instructions were as clear as mud until someone showed us an example.
03 / CHECK YOUR UNDERSTANDING
Quick idiom quiz
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Can you recall the expression?
Complete the example using the expression from this lesson.
The booking instructions were ________ until someone showed us an example.
Show the answer
As clear as mud — Very difficult to understand.
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Make it yours
Write one sentence using “As clear as mud” about your own life.
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Does your sentence match this meaning?
Very difficult to understand.
Compare: The booking instructions were as clear as mud until someone showed us an example.
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More ways to understand and use it
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When to use it
Use it humorously or sarcastically when an explanation is confusing. It is informal and may sound rude if said directly about someone’s effort.
More examples in context
- “Is the new rule clear?” “As clear as mud,” he joked.
- My first explanation was as clear as mud, so I rewrote it in three simple steps.
Usage note
The words appear to praise clarity, but the intended meaning is the opposite. In a polite request, simply say which part you do not understand.
A short conversation
A: Did that long explanation help?
B: It was as clear as mud to me. Could we try a practical example?
A: Yes, let us work through one together.
One more practice question
What does “Those instructions are as clear as mud” mean?
A. The instructions are completely easy to understand.
B. The instructions are confusing.
Check your answer
B. The humorous comparison reverses the apparent praise.
Related lessons
Meaning and usage checked against Cambridge Dictionary. Explanations, examples and conversation are original.