The phrase "in a demeanor" is grammatically correct and can be used in written English.
It is typically used to describe someone's behavior or mannerisms. Example: Despite being nervous, she maintained a calm and professional demeanor during the meeting.
"I had a chance to make a 3, I missed it," Anthony said in a demeanor that suggested the shot and the game were already behind him.
People with AS may analyze and distill their observations of social interaction into rigid behavioral guidelines, and apply these rules in awkward ways, such as forced eye contact, resulting in a demeanor that appears rigid or socially naive.
It's not surprising that, with his brute-in-a-suit demeanor, he was an understudy for the role of Richard M. Nixon in the Broadway production of "Frost/Nixon".
While she had no real authority over the young staff members, she inspired the fear of Christmas God in all of us with a demeanor that reminded me of Angelica from Rugrats.
Perhaps because of all of Springer's football success — she helped win four championships with the Diamonds, and last summer played on a victorious United States team in an international tournament in Stockholm — she maintains a demeanor that, contrasted with her ebullient young teammates, is almost comically stoic.
There's a demeanor in the locker room that just kind of breeds success.
Seymour, who will be 80 in July and has a demeanor more like that of a secretary of state or a corporate executive, handled the economic terms of the projects and the family's critical financial relationships with various banks.
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Word of the death of Neil Armstrong on Saturday afternoon triggered a torrent of responses on social media, many of them praising the first man to walk on the moon for his inspirational courage enveloped in a humble demeanor.
Pakistan remained a democratic country in 2010 though the powerful military still rules supreme albeit in a clandestine demeanor.
"While we all want great medical care, we also want doctors who listen to us and convey empathy--an understanding of our feelings and concerns, reflected in a warm demeanor.
