Webster's Revised Unabridged Dictionary · 1913

Imperious

Imperious , adjective

[Latin imperiosus: compare French impérieux. See Imperial.]

1.
Commanding; ascendant; imperial; lordly; majestic. [Obsolete]
A vast and imperious mind. — Tilloison
Therefore, great lords, be, as your titles witness, Imperious. — Shakespeare
2.
Haughty; arrogant; overbearing; as, an imperious tyrant; an imperious manner.
This imperious man will work us all From princes into pages. — Shakespeare
His bold, contemptuous, and imperious spirit soon made him conspicuous. — Macaulay
3.
Imperative; urgent; compelling.
Imperious need, which can not be withstood. — Dryden