err

blundered

ˈblʌndə

verb

make a stupid or careless mistake; act or speak clumsily.

he knew he’d blundered

make a mistake,be mistaken,err,be in error,misjudge,miscalculate,bungle,trip up,be wrong,get something wrong,be wide of the mark,slip up,screw up,blow it,foul up,goof,put one’s foot in it,make a boo-boo,fuck up,bugger up,drop a brick,boob

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