/ˈblʌndə(r) ||; ˈblʌndɚ/verb [I] to make a stupid mistake 犯愚蠢的错误 blunder about, around, etc to move in an uncertain or careless way, as if you cannot see where you are going 瞎跑；瞎闯: We blundered about in the dark, trying to find the light switch. 我们摸黑找电灯开关。