Jingo

Flipping through the dictionary, I thought this word had an interesting etymology. "Jingo" is defined as, "one who vociferously supports one's country, especially in a belligerent foreign policy; a chauvinistic patriot" (AHD). Fair enough. The fun part is that the phrase "By jingo!" is used for emphasis or to express surprise, and that this phrase was used in the "refrain of a bellicose 19th-century English music-hall song" (AHD). Even better, "jingo" is an alteration of "Jesus," the etymology of which of course leads us ultimately back to the Hebrew word "yesua," (related to our name "Joshua," FYI) (AHD). So it seems that an English word that could potentially describe a warmonger leads us back to a man commonly known as the Prince of Peace. Excellent.