Collins COBUILD Advanced Learner's English Dictionary - clear up

1. When you clear up or clear a place up, you tidy things and put them away. After breakfast they played while I cleared up... I cleared up my room. PHRASAL VERB: V P, V P n (not pron), also V n P 2. To clear up a problem, misunderstanding, or mystery means to settle it or find a satisfactory explanation for it. During dinner the confusion was cleared up: they had mistaken me for Kenny. = sort out PHRASAL VERB: V P n (not pron), also V n P see also clear-up 3. To clear up a medical problem, infection, or disease means to cure it or get rid of it. If a medical problem clears up, it goes away. Antibiotics should be used to clear up the infection... Acne often clears up after the first three months of pregnancy. PHRASAL VERB: V P n (not pron), V P, also V n P 4. When the weather clears up, it stops raining or being cloudy. It all depends on the weather clearing up. PHRASAL VERB: V P