Definition from Wiktionary, the free dictionary
Alternative forms 
- demeanour (UK spelling)
- the social non-verbal behaviours (such as body language and facial expressions) that characterise a person
- The man's demeanor made others suspicious of his intentions.
- A confident demeanor is crucial for persuading others.
- a. 1587, Raphael Holinshed quoting Strabo, Historie of England, Book III:
- At this present (saith he) certeine princes of Britaine, procuring by ambassadors and dutifull demeanors the amitie of the emperour Augustus, haue offered in the capitoll vnto the gods presents or gifts, and haue ordeined the whole Ile in a manner to be appertinent, proper, and familiar to the Romans.
- 1993, “Interrogation: The Kinesics Technique”, in John J. Fay editor, Encyclopedia of Security Management, ISBN 0750696605, page 418:
- Demeanors that are apologetic and overly polite are inherently contradictory to demeanors that exhibit fear and anger.
Related terms 
The outward way in which a person behaves
- demeanor in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
- demeanor in The Century Dictionary, The Century Co., New York, 1911