glitch -
A sudden, unexpected, and usually temporary malfunction of equipment such as a computer
The space shuttle take-off was canceled with 2 seconds left in the countdown, due to a glitch discovered in the fuel supply.
noun
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gaffe -
An unintentional act or remark causing embarrassment to its originator; a blunder
When the politician made a huge gaffe at the debate, he realized he was going to lose the election.
adjective
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disconcerting -
Making someone feel uncertain, uncomfortable or worried
Linda had a disconcerting habit of speaking before thinking about what she should say.
nounverb noun
See verb
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unforgivable -
So bad as to be unable to be forgiven or excused
He was fired because the company felt that stealing money was an unforgivable act.
adjective
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negligent -
To mistakenly fail to do something that should have been done
Bill admitted that he was negligent in not locking the door, and as a result the house was robbed.
verb
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flub -
To fail or make a mistake
The outfielder flubbed the catch when the baseball flew past him.
nounverb noun
See verb
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slip -
A small mistake or accident, often due to carelessness.
After he commented about her weight, he apologized for the slip of the tongue that he wished he hadn't said,
noun
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misconception -
A wrong and often widespread assumption based on faulty thinking or lack of information.
There’s a common misconception that bats are blind.
nounverb noun
See verb
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fumble -
An act of using the hands clumsily while doing or handling something
Owen made a major fumble on his date when he knocked over his glass of wine.
adjective
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inadvertent -
Not deliberately planned or intended.
He made an inadvertent mistake by sending the email to the wrong person.
noun
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mixup -
An error resulting from things being wrongly arranged or identified.
There was a mix-up at the airport, and my luggage went to the wrong city.
verb
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backfire -
When a plan fails, and it has the opposite result of what was intended.
The politician tried to hide his assets, in order to appear like a common man. But his plan backfired when they were revealed, and people saw that he was a liar.
