tìn-tsěng鎮靜

steady

steady; calm; stable; to make steady; to calm down; to stabilise

English Wiktionary, “鎮靜” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E9%8E%AE%E9%9D%9C · confidence: Medium (Wiktionary, Hokkien)