Webster’s Revised Unabridged Dictionary · 1913
Demeanor
De·mean′or (·ẽr), n. [Written also demeanour.] [For demeanure, fr. demean. See Demean, v. t.] 1. Management; treatment; conduct. [Obs.]
God commits the managing so great a trust . . . wholly to the demeanor of every grown man. Milton.
2. Behavior; deportment; carriage; bearing; mien.
His demeanor was singularly pleasing. Macaulay.
The men, as usual, liked her artless kindness and simple refined demeanor. Thackeray.