blunder
US /ˈblʌn.dɚ/
UK /ˈblʌn.dɚ/

1.
犯错, 笨手笨脚地走
make a stupid or careless mistake; act clumsily or thoughtlessly
:
•
He tends to blunder when he's under pressure.
他在压力下容易犯错。
•
She blundered into the room, knocking over a vase.
她笨手笨脚地走进房间,打翻了一个花瓶。