Definition of "righteous"
adjective
comparative more righteous, superlative most righteous
(slang, US) Awesome; great.
Quotations
The sportos, the motorheads, geeks, sluts, bloods, wastoids, dweebies, dickheads - they all adore him. They think he's a righteous dude.
1986, John Hughes, Ferris Bueller's Day Off (Motion Picture), spoken by Grace Wheelberg (Edie McClurg)
verb
third-person singular simple present righteouses, present participle righteousing, simple past and past participle righteoused