dimwit --------- 蠢货（名词，非正式）

英文释义
(noun, INFORMAL) A foolish person. (NOTE: impolite usage)

例句
This morning I couldn't find my house keys or my cell phone, and I missed my bus...I felt like such a dimwit.
今天早上，我找不到房门钥匙，也找不到手机，还错过了公交车……我感觉自己真是个蠢货。