loose cannon Definition

hothead, hotheaded, lunatic, confrontational, irascible, combative, vindictive, outspoken, cantankerous, headstrong, henchman, troublemaker, hardass, wackjob, nutcase, buffoon, meddler, sulker, nutter, arrogant, maverick, egotistical, micromanager, paranoid, egomaniac, loudmouth, prevaricator, grandstander, unlikeable, blowhard, windbag, mudslinger, wimp, homophobe, untrustworthy, joker, risk taker, skirt chaser, sociopath, megalomanic, blabbermouth, provocateur, backstabber, thug, liar, tosspot, unhinged, nincompoop, sleazeball, goofball, cocky, womanizer, lackey, vulgarian, psychopath, hypocrite, kidder, slimeball, disloyal, dissembler, coward, exaggerator, hatchetman, lapdog, russophobe, maniac, deranged, loony, philanderer, idiot, ditherer, knucklehead, eccentric, rascal, unpresidential, brash, ideologue, clownish, provoker, stooge, conniver, overemotional, petulant, wacko, controversialist, fearmonger, talker, quipster, thickheaded, workaholic, protege, solipsist, backslapper, likable, dislikable, bootlicker, scumbag, agent provocateur, impolitic, grand inquisitor,