Spiff_upWordNet ExplorerExplore synonyms, antonyms, hypernyms, hyponyms, and semantic relationships for “spiff_up” powered by Princeton WordNet.verbmake neat, smart, or trimWords in this synset: spruce_up, spruce, titivate, tittivate, smarten_up, slick_upverbmake more beautiful📖 Dictionary definition🌍 Word origin & etymology