adjective, swank·er, swank·est.
verb (used without object)
Origin of swank1
verb (used without object), swank or swonk, swonk·en, swink·ing, noun
Origin of swink
Word Origin for swank
Word Origin for swink
1809, "to strut" (swanky, n., "attractive young fellow" is recorded from 1508), perhaps related to Middle High German swanken "to sway, totter," and Old High German swingan "to swing." Said to have been a Midlands and southwestern England dialectal word. The noun meaning "ostentatious behavior" is recorded from 1854; adjective sense of "stylish, classy, posh" is from 1913.