clear up

US /klɪr ˈʌp/
UK /klɪr ˈʌp/
"clear up" picture
1.

to become brighter and free of clouds or rain

:
The weather is expected to clear up by afternoon.
After the storm, the sky began to clear up.
2.

to solve or explain something

:
We need to clear up this misunderstanding immediately.
Can you clear up the confusion about the meeting time?
3.

to make a place tidy by removing unwanted items

:
Please clear up your room before you go out.
It's time to clear up the mess in the kitchen.