Wiktionary
cowboyish
a. (context informal English) cowboylike
Usage examples of "cowboyish".
He has a long history with his department of cowboyish operations, and a long history with area judges for making up so-called evidence to get warrants.
American policies, from their cowboyish adventures in imperialism to their wasteful and destructive energy and environmental policies to—most damning—their insistence on an outdated economic system that had the infuriating habit of making her own preferred statist system seem inefficient.