The most common and most likely answer to this crossword clue is the 7 letter word BLUNDER
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More clues leading to the result BLUNDER
- Line in book subject to typo, for example
- Belt occasionally put on beneath a slip
- Slip in a pound raised subject to control
- Mistake put British Library in inferior position
- Raising pound sub is a misjudgement
- Brazil’s wingers subject to error
- Not happy about new date — right or wrong?
- ... is a mistake, books left one embarrassed in retrospect
- Mistake from British official ultimately in front of subordinate
Buddy explains!

The straight part
We know that "is a mistake" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case is a mistake = blunder.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BLUNDER mean?
BLUNDER noun- A clumsy or embarrassing mistake.
- A very bad move, usually caused by some tactical oversight.
- To make a clumsy or stupid mistake.
- To move blindly or clumsily.
- To cause to make a mistake.
- To do or treat in a blundering manner; to confuse.