unruffled

adjective

1. calm; not emotionally upset or agitated; steady; unflustered: He became all excited, but she remained unruffled.
2. not ruffled, as a garment; smooth.

verb (used with object), un·ruf·fled, un·ruf·fling.

1. to calm (someone).
2. to smooth out (something).

verb (used without object), un·ruf·fled, un·ruf·fling.

3. to become calm or smoothed out.

adjective

1. unmoved; calm
2. stillthe unruffled seas

adj.1650s in figurative sense, from un- (1) “not” + past participle of ruffle. Literal meaning, in reference to feathers, leaves, etc., is recorded from 1816.