Is on the warpath - Idioms by The Free Dictionary
be on the warpath (redirected from is on the warpath)
be on the warpath
slang To be overtly angry and/or looking for retribution. The phrase is potentially offensive, as it references a Native American war practice. I'd avoid the boss if I were you—he's on the warpath and screaming at everyone he sees.
be/go on the ˈwarpath (informal) be angry and ready for an argument or a fight about something: Look out — the boss is on the warpath again!In the past, if Native Americans were on the warpath, they were going to war or preparing to attack somebody.