blunder Definition in the Cambridge English Dictionary
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Definition of “blunder” - English Dictionary

Definition of "blunder" - American English Dictionary

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blundernoun [C]

 us   /ˈblʌn·dər/
a ​bigmistake, ​especially one resulting from a ​lack of ​care or ​thought: His ​failure to ​respondimmediately to the accusations was a ​majorpolitical blunder.
blunder
verb [I]  us   /ˈblʌn·dər/
He feared he had blundered.
(Definition of blunder from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "blunder" - British English Dictionary

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blundernoun [C]

uk   /ˈblʌn.dər/  us   /-dɚ/
a ​seriousmistake, usually ​caused by not taking ​care or ​thinking: He said that the ​tax was a ​majorpolitical blunder. I made a blunder by getting his ​namewrong.

blunderverb

uk   /ˈblʌn.dər/  us   /-dɚ/

blunder verb (MOVE)

[I usually + adv/prep] to ​move in an ​awkward way: I could ​hear him blundering around in the ​darkness.

blunder verb (MISTAKE)

[I] to make a ​seriousmistake, usually because of not taking ​care or ​thinking: Police blundered by not ​releasing more ​details about the ​case to ​focuspublicinterest.
blunderer
noun [C] uk   /r/  us   //
blundering
adjective [before noun] uk   us   /-ɪŋ/
You blundering ​idiot! What do you ​think you're doing?
(Definition of blunder from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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