← BackshareGuessunswept/ʌnˈswɛpt/adjectiveNot cleaned by sweeping; covered with dust, dirt, or debris.He noticed the unswept hallway and grabbed a broom.The kitchen floor was unswept after the party, with crumbs everywhere.The old barn had an unswept dirt floor littered with straw.SynonymsdirtydustyAntonymssweptclean