English version

self-possessed

From Longman Dictionary of Contemporary Englishself-possessedˌself-posˈsessed adjective  CONFIDENTcalm, confident, and in control of your feelings, even in difficult or unexpected situations – used to show approval She’s a confident self-possessed public speaker.self-possession noun [uncountable]
Examples from the Corpus
self-possessedMiklós, in his middle fifties, is a tall, quietly spoken but imposing figure, very self-possessed.Until tragedy and fate catch up with her she is always mistress of the situation, coolly self-possessed.So its final fulfilment will lie not simply in the realisation of a wholly self-possessed life.She had a head of flowing auburn hair and carried herself in a self-possessed manner touching on the arrogant.She was no longer the dedicated, self-possessed Miss Chilcott of Yelton.
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