Synonyms of self-possessed in English:

self-possessed


See definition of self-possessed

adjective

1‘a girl who has been shy or awkward can become quite self-possessed as she cares for her new baby’

SYNONYMS

assured, self-assured, calm, cool, cool, calm, and collected, composed, at ease, tranquil, serene, unperturbed, unruffled, impassive, nonchalant, confident, self-confident, sure of oneself, poised, dignified, equable, imperturbable, suave, urbane, elegant

informal together, unfazed, unflappable

North American informal nonplussed

rare equanimous

ANTONYMS

unsure, nervous