looselooseloosesloosedloosingadjective (looser, loosest)spellingRemember! Don't confuse loose with lose, which is a verb: • We mustn't lose this game.1not tied or fixed: The dog broke its chain and got loose. One of his teeth is loose.2not fitting closely: a loose white shirtoppositetight▶ looselyadverb: The rope was tied loosely round a tree.