Home›Browse›T›that fastthat fastOur editors are putting together more complete content — check back in about 20 minutesthat fastadjective · 1adverb · 1that fast — adjectiveadjective1. able to move or act at great speed1.adjectiveDefinitionable to move or act at great speedExampleThe fast car won the race.that fast — adverbadverb1 sense1. at a high speed1.adverbDefinitionat a high speedExampleShe ran fast to catch the bus.