Webster's Revised Unabridged Dictionary · 1913

Demeanor

Demeanor , noun

[For demeanure, from demean. See Demean, transitive verb]

1.
Management; treatment; conduct. [Obsolete]
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