Home general Definitions of lummy - OneLook By David Craig | Published April 07, 2026 Definitions from Wiktionary (lummy)▸ adjective: (slang) shrewd; knowing; cute▸ adjective: (UK, slang, obsolete) jolly, first-rate.rumgumptious, cunning, lumpatious, litty, sucky, shady, cruddy, squishy, cuddly-wuddly, scroungy, more...▸ Words similar to lummy▸ Usage examples for lummy▸ Idioms related to lummy▸ Civic discussion about lummy (New!)▸ Popular nouns described by lummy▸ Words that often appear near lummy▸ Rhymes of lummy▸ Invented words related to lummy