Princeton's WordNet
discomposedadjective
having your composure disturbed
Antonyms:
serene, composed, unagitated, tranquil, self-possessed, cool, equanimous, unflurried, unruffled, imperturbable, unflappable, nerveless, unperturbed, unflustered, coolheaded, self-contained, calm, poised, collected, self-collected
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