澄すみ渡わたる

godan verb (-ru), intransitive verb

be perfectly clear; be cloudless; be serene

Describes the sky, weather, or water being completely clear and unobstructed. Often used for a crisp, cloudless sky or crystal-clear water.

• 秋あきの空そらは澄すみ渡わたっている。

  The autumn sky is perfectly clear.

• 湖みずうみの水みずが澄すみ渡わたって、底そこまで見みえる。

  The lake water is so clear that you can see the bottom.