WordNet: composed

serenely self-possessed and free from agitation especially in times of stress; "the performer seemed completely composed as she stepped onto the stage"; "I felt calm and more composed than I had in a long time"

• also see unagitated

• also see dignified

• similar to calm, serene, tranquil, unagitated

• similar to imperturbable, unflappable

• similar to collected, equanimous, poised, self-collected, self-contained, self-possessed

• similar to cool, coolheaded, nerveless

• similar to unflurried, unflustered, unperturbed, unruffled

composed

• (englanti) discomposed (antonym)
• (suomi) tyyni (synonyymi)