The adjective composed describes someone who is calm and shows no nervousness or agitation. You may be very upset about your brother’s unkind remark, but your composed face doesn’t give away your feelings.

If you’re composed, that means you're free of emotion or nervousness — or at least you look that way. Composed typically describes an outward appearance, so you could be angry on the inside but still maintain a composed manner that hides what you’re really feeling. You’ll often hear the word used to describe someone who can keep everything under control during times of stress. You probably look composed even when you’re stressing out over your calculus exam.

Definitions of composed
  1. adjective
    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”
    not agitated or disturbed emotionally
    calm, serene, tranquil, unagitated
    not agitated; without losing self-possession
    imperturbable, unflappable
    not easily perturbed or excited or upset; marked by extreme calm and composure
    collected, equanimous, poised, self-collected, self-contained, self-possessed
    in full control of your faculties
    cool, coolheaded, nerveless
    marked by calm self-control (especially in trying circumstances); unemotional
    unflurried, unflustered, unperturbed, unruffled
    free from emotional agitation or nervous tension
    having or expressing dignity; especially formality or stateliness in bearing or appearance
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    having your composure disturbed
    troubled emotionally and usually deeply
    abashed, chagrined, embarrassed
    feeling or caused to feel uneasy and self-conscious
    blushful, blushing, red-faced
    having a red face from embarrassment or shame or agitation or emotional upset
    bothered, daunted, fazed
    caused to show discomposure
    discombobulated, disconcerted
    having self-possession upset; thrown into confusion
    flustered, hot and bothered, perturbed, rattled
    thrown into a state of agitated confusion; (`rattled' is an informal term)
    emotionally upset
    lacking dignity
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