dago noun da·go \ ˈdā-(ˌ)gō \ Trending Now: More Trending: symbiote charlatan lowlife kakistocracy slimeball SEE ALL See What's Trending Now See More Trending Words What's Trending Now More Trending Words symbiote 'an organism living in symbiosis' charlatan 'faker or fraud' lowlife 'a person of low moral character' kakistocracy 'government by the worst people' slimeball 'a morally repulsive or odious person' SEE ALL Time Traveler! Explore the year a word first appeared Definition of dago plural dagos or dagoes offensive —used as an insulting and contemptuous term for a person of Italian or Spanish birth or descent See dago defined for English-language learners Origin and Etymology of dago alteration of earlier diego, from Diego, a common Spanish given name First Known Use: 1832 in the meaning defined above