"calm, tranquil, free from disturbance or agitation," c. 1600, past-participle adjective from compose (v.). Earlier (1560s) "made up of parts." Related: Composedly; composedness.
I felt calm and more composed than I had in a long time
the performer seemed completely composed as she stepped onto the stage
componentry
comport
comportment
compos mentis
compose
composed
composer
composite
composition
compositional
compositor
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