'demeanour' definitions:

Definition of 'demeanour'

noun

(behavioral attributes) the way a person behaves toward other people [syn: demeanor, demeanour, behavior, behaviour, conduct, deportment]

From: GCIDE

Demeanor \De*mean"or\, n. [Written also demeanour.] [For demeanure, fr. demean. See Demean, v. t.]
1. Management; treatment; conduct. [Obs.] [1913 Webster]
God commits the managing so great a trust . . . wholly to the demeanor of every grown man. --Milton. [1913 Webster]
2. Behavior; deportment; carriage; bearing; mien. [1913 Webster]
His demeanor was singularly pleasing. --Macaulay. [1913 Webster]
The men, as usual, liked her artless kindness and simple refined demeanor. --Thackeray. [1913 Webster]