沉稳 (chén wěn): Steady / stable (Adjective) — Meaning & Stroke Order

He has a steady personality and never panics when encountering major events.

Don't you think he's acting a bit too steady for a crisis moment like this?

His personality is not steady; he easily panics and loses his composure over minor matters.

The way she handles the family finances is always so steady, which puts the whole family at ease.