'clear up' definitions:

Definition of 'clear up'

From: WordNet
verb
Make clear and (more) comprehensible; "clarify the mystery surrounding her death" [syn: clarify, clear up, elucidate] [ant: obfuscate]
verb
Finish a task completely; "I finally got through this homework assignment" [syn: get through, wrap up, finish off, mop up, polish off, clear up, finish up]
verb
Free (the throat) by making a rasping sound; "Clear the throat" [syn: clear, clear up]
verb
Become clear; "The sky cleared after the storm" [syn: clear up, clear, light up, brighten] [ant: cloud, overcast]
verb
Make free from confusion or ambiguity; make clear; "Could you clarify these remarks?"; "Clear up the question of who is at fault" [syn: clear, clear up, shed light on, crystallize, crystallise, crystalize, crystalise, straighten out, sort out, enlighten, illuminate, elucidate]

Synonyms of 'clear up'

From: Moby Thesaurus