The Collaborative International Dictionary
Buckish \Buck"ish\, a. Dandified; foppish.
Douglas Harper's Etymology Dictionary
"dandyish," 1782, from buck (n.1) in the slang sense + -ish. Related: Buckishly.
Wiktionary
a. (context archaic English) Like a dandy; foppish; swellish.
Usage examples of "buckish".
And they turned with sly, buckish grins to glance at Whitney, whose face now matched the wheezing red coals in the hearth beside her.
Into the courtyard pulled the Wharton family coach, the windows flashing with faces grown familiarValentine formal in buckish pomp, his companions splendid in brushed and polished uniforms.
Buckish,' said she to herself, rejoicingly, 'is now with the ambassador at Paris'--Lord Buckish was her nephew--'and with him Frank will meet women that are really beautiful--women of fashion.
Every one wears the straight, high-crowned silk hat that went out with us years ago, and the cut of clothing of even the most buckish young fellows is behind the times.