unruffled
Definitions
Not agitated or disturbed; calm and composed.
Having a smooth, even surface; not ruffled.
Examples
Despite the chaos unfolding around her, she remained completely unruffled as she finished her report.
The experienced diplomat kept an unruffled demeanor even when faced with the most aggressive questioning.
Synonyms
calm composed serene tranquil placid collected imperturbable
Antonyms
agitated flustered anxious perturbed nervous disturbed restless