sit-tshiak失策

to make a blunder

to make a blunder, to slip up; to miscalculate; to be unwise in a move

English Wiktionary, “失策” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%A4%B1%E7%AD%96 · confidence: Medium (Wiktionary, Hokkien)