tîm-tsěng沉靜

quiet

quiet; calm; serene; placid; gentle (of a person's nature)

English Wiktionary, “沉靜” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%B2%89%E9%9D%9C · confidence: Medium (Wiktionary, Hokkien)