blunder

US /ˈblʌn.dɚ/
UK /ˈblʌn.dɚ/
"blunder" picture
1.

a stupid or careless mistake

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The government made a serious blunder in its economic policy.
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He realized his blunder as soon as he said it.
:
mistakeerrorgaffeslip-upfoul-up
1.

make a stupid or careless mistake; act clumsily or thoughtlessly

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He tends to blunder when he's under pressure.
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She blundered into the room, knocking over a vase.
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errmiscalculatestumblefumblebotch