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demeanor

American  
[dih-mee-ner] / dɪˈmi nər /
especially British, demeanour

noun

  1. conduct; behavior; deportment.

  2. facial appearance; mien.

Etymology

Origin of demeanor

First recorded in 1425–75, demeanor is from the late Middle English word demenure. See demean 2, -or 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.