1
general::
Phrase(s): clear something up
1. to make something more clear. • Let the muddy water stand overnight so it will clear up. • A strong wind blew in and cleared up the smoke in the air. 2. to explain something; to solve a mystery. • I think that we can clear this matter up without calling in the police. • First we have to clear up the problem of the missing jewels. 3. to cause a rash or inflammation to return to normal; to cause skin to "clear." • There is some new medicine that will clear your rash up. 4. to cure a disease or a medical condition. • The doctor will give you something to clear up your congestion.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
1. Clarify, explain, solve, as in Let's try to clear up this misunderstanding. [Late 1600s] 2. Become clear, as in After the storm, it cleared up very quickly. [Early 1600s] 3. Return something to a normal condition, cure, as in This new salve will clear up your rash.
American Heritage Idioms