The phrase "public demeanor" is correct and usable in written English.
It can be used to describe the outward behavior or conduct of an individual in a public setting.
Example: "His public demeanor was calm and collected, even in the face of criticism."
Alternatives: "public behavior" or "public conduct."
Still, he has a quiet public demeanor, and so he remains a relatively unknown figure.
His temperament and public demeanor run toward cooling that anger rather than stoking it.
His apology may have seemed out of sync with his button-down public demeanor, but it was very much in line with his sportsmanship.
Often, her unthreatening public demeanor -- she was known early in her career as "the Betty Crocker governor," Ms. Larsen said -- led people to underestimate her political skills.
If Mrs. Rell's signature high-necked blouses hint at her reserved public demeanor, Ms. Moody's slip-on shoes and soft pullovers telegraph her accessibility.
With a fervent but courtly public demeanor and a drawl still evident a half-century after he left the South, he seemed to revel in such controversies.
Though their public demeanors and applicable experience could scarcely be more different, Trump, like Reagan, enjoyed a high-profile career in entertainment before he entered politics.
Wright, who is fifty-eight, has a British public-school demeanor, which is generally courteous and hearty and seemingly rational.
But despite proudly supporting the right to bear arms "regardless of race, religion or sexual orientation," the organization's public-facing demeanor changes dramatically with black victims.
But whatever the limits on Mr. Bush's discretion, they do not alter the burden on his public comments and demeanor when the moment of decision comes.
A delicate ballad called "August Winds" found him parsing the distinction between public and private demeanors, with all the subtlety of a well-practiced interior monologuist.
