self-possession

Synonyms

aplomb, calmness, collectedness, composedness, composure, cool, coolness, countenance, equanimity, equilibrium, imperturbability, placidity, repose, sangfroid, serenity, tranquillity (or tranquility), tranquilness;

Antonyms

agitation, discomposure, perturbation;

Near Antonyms

alarm (also alarum), anxiety, anxiousness, apprehension, apprehensiveness, care, concern, disquiet, solicitude, uneasiness, worry;

excitability, excitableness, nervousness;

disturbance;

Related Words

assurance, confidence, poise, self-assurance, self-assuredness, self-confidence, self-trust;

easygoingness, laid-backness;