笨伯 (bènbó): fool

Meanings

Tā bú shì bènbó, zhǐshì fǎnyìng màn yìdiǎn.

He isn't a dolt; he just reacts a bit slowly.

Bié bǎ zìjǐ dàngchéng bènbó.

Don't treat yourself like a fool.

register

Literary and slightly old-fashioned. In modern speech 笨蛋 (bèndàn) or 蠢货 (chǔnhuò) are far more common.

笨 bèn

伯 bó