[], (Verb)

Definitions:
- To free from obscurity; to make clear or apparent; to brighten or clear (the face, expression, etc.); to illuminate (the mind or understanding). Also occasionally reflexive: to become clear.

- To become clear; to brighten; (of the sun, sky, etc.) to become free from clouds.


Phrases:

Origin:
late 16th century; earliest use found in Henry Constable (1562–1613), polemicist and poet. From un- + cloud