形容詞 unruffled:

1. free from emotional agitation or nervous tension- Anthony Trollope
   同義詞：unflurried, unflustered, unperturbed
2. (of a body of water) free from disturbance by heavy waves
   同義詞：placid, quiet, still, tranquil, smooth

1. She spoke with unruffled calm.
   她從容不迫地講話。
2. He remained unruffled by the charges.
   他受到這些指控仍處之泰然。