tìⁿ-m̄-chai佯毋知

to play the fool

to play the fool; to act dumb or stupid; to play dumb

English Wiktionary, “佯毋知” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E4%BD%AF%E6%AF%8B%E7%9F%A5 · confidence: Medium (Wiktionary)