1. 脱口而出, 冒失地说出：blunder on || 无意中发现 偶然碰见 | blunder out || 脱口而出, 冒失地说出 | blunder through || 胡乱应付
1. The blunder was indicative of how the series has gone for the Ottawa players who looked nervous and out of sorts on Wednesday.
2. " It is absolutely forbidden to let planes out with a blunder like this, " he said.
verb
1. utter impulsively
e.g. He blurted out the secret
He blundered his stupid ideas