Webster's Revised Unabridged Dictionary · 1913

highfalutin

highfalutin , adjective

Affectedly genteel; pretentious; haughty; snobbish. [informal]

Also: highfalutin', highfaluting

highfalutin , noun

[Perh. a corruption of highflighting.]

High-flown, bombastic language. [Jocular, United States] — Lowell

Also: highfaluting