One who advocates an aggressivenationalism; one who vociferously supports a nation's military aims.
1919: William Cowper Brann, The Complete Works of Brann the Iconoclast, Volume 12The term "jingoist;" or its equivalent, was applied to Washington and Henry, to Jefferson and Jackson. It was applied to James G. Blaine, the typical American of his time -- a man from beneath whose very toe-nails enough intellect might be scraped to make an hundred Clevelands or McKinleys. All were jingoes in their day and generation, because all preferred the title of sovereign to that of subject...
1988: Jeffrey Hadden and Anson Shupe, Televangelism: Power and Politics on God`s FrontierWhen liberals did acknowledge the persistence of the covenant theme, they treated it like some atavistic beast, lumping it together with the largely aberrant doctrines of ultra-right-wingers, "Jewish conspiracy" advocates, Nazi sympathizers, and jingoist fanatics.