The verb to lose has three meanings: to stop having something, to be unable to find something, or to not win. Loose is an adjective that means not firmly attached. As a verb, to loosemeans to make something loose.
lose (lost, lost) You look better, have you lost weight? I’ve lost my umbrella! Our team lost four games in a row.
loose This tooth feels loose. Her hair fell loose on her shoulders. He always wears loose clothes.