clear up
phrasal verbDefinition of clear up
1 of weather or the sky : to change so that there are no clouds, fog, etc. The sky cleared up after the rain. It's cloudy now, but it's clearing up gradually.
2 of the skin : to become free of marks or spots My skin cleared up when I started using the cream.
3 : to go away My symptoms cleared up once I started using the cream.
4 British : to make an area clean or tidy Let's clear up before we leave.
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