Boozer/ˈbuːzər/ Definition 1 of 2Pro Tip 1/3Informal Usage Used casually among friends, may not be polite in formal situations. My cousin is quite the boozer; he never misses a party. Pro Tip 2/3Might Offend Be careful, as calling someone a 'boozer' can be offensive. Avoid calling someone a boozer; it's not a compliment. Pro Tip 3/3Negative Connotation Implies excessive or problematic drinking, more than social drinking. After every stressful week, he becomes a weekend boozer.