"self-assured manner" is a correct and usable phrase in written English.
It can be used to describe someone who is confident and poised in their behavior and body language. The phrase can be used in a variety of contexts, such as in a description of a character in a story, an observation of someone in real life, or in a formal essay discussing personal qualities. Example: The CEO entered the room with a self-assured manner, exuding confidence and control as he addressed the board of directors.
Chris combined his debonair and self-assured manner with some peculiar hobby-horses.
Mr Meri's self-assured manner mirrors Estonia's astonishingly confident return to Europe.
She has an outspoken, coolly self-assured manner and a throaty, well-modulated voice with a trace of a British accent".
Ms. Camp is a striking brunette with a self-assured manner and a penetrating gaze that, she says, often land her roles as lawyers in theater and on television.
His acerbic, impatient and self-assured manner alienated many Argentines, especially those who did not share in the "pizza and champagne" bonanza of the 90's, and when he made a run at the presidency himself in 1999, he was resoundingly rejected.
Still, the visit — and Mr. Cameron's relaxed, self-assured manner, far removed from the taut figure he cut on the campaign trail until only a week ago — suggested a growing Conservative sense that at least a narrow majority could be within the party's grasp.
A deep-seated fear of their masculinity being questioned could explain why many men react against a female colleague in a more senior role by behaving in a more self-assured and difficult manner, the scientists suggest.
Now that you have a rough idea of the group's interests and characteristics, try to make them aware of your presence in a self-assured, non-timid manner.
He is slightly Rovian in aspect, stature, and manner: well padded, self-assured, playful.
IN 2006 when the market for contemporary art was red hot and dealers and collectors spent hours jockeying to be first in the door at Art Basel, the world's most important contemporary art fair, Philippe Ségalot could be seen hanging back, his manner calm and self-assured.
Carter, the superstar turned mortal by the Knicks, repeated his mantra 10 times today after practice, in a manner more defensive than self-assured.
