hangover /ˈheɪ̯ŋoʊ̯vɚ/ noun4 •Negative effects, such as headache or nausea, caused by previous drunkenness due to (excessive) consumption of alcohol.I really enjoyed yesterday’s party, but now I have the biggest hangover – I’ll not be doing that again any time soon. •Similar negative effects caused by previous excessive consumption of another substance, such as a drug, coffee, sugar, etc.Don't go overboard and find yourself with a sugar hangover that lasts for days and makes your diet days that much harder. — 2007 •(figurative) An unpleasant relic left from prior events.The one hangover from high school that colored part of my college career was the social requirement of having a boyfriend. — 1981 •(historical) A sleeping arrangement, usually in homeless shelters, over a rope. formshangovers