demeanour
UK: dɪˈmiːnə | US: dɪˈmiːnər
n. the way a person behaves, dresses, and speaks, which shows their character or feelings; outward manner or bearing.
The word "demeanour" traces back to Old French demeiner (to conduct, guide), derived from Latin minare (to drive, threaten) combined with the intensive prefix de-. Over time, mean evolved to signify "intention" or "expression," while -our (a variant of -or) nominalized the term. The modern sense reflects how one "carries" or "presents" themselves outwardly.
Her calm demeanour under pressure impressed the interview panel.
The teacher’s stern demeanour discouraged misbehaviour in class.
Despite his friendly demeanour, he was deeply reserved.
A professional demeanour is essential in customer-facing roles.
His nervous demeanour revealed his lack of confidence.