← BackshareGuessfleetly/ˈfliːtli/adverbIn a fast and nimble way; swiftly.She moved fleetly through the crowded market, dodging shoppers with ease.The messenger rode fleetly to deliver the urgent news before sundown.The cheetah ran fleetly across the savanna, chasing its prey.SynonymsswiftlyquicklyrapidlyAntonymsslowly