覆(おお)うto cover, to hide, to conceal, to wrap, to disguise

雲(くも)が空(そら)を覆(おお)って、太陽(たいよう)が見(み)えなくなった。

The clouds covered the sky, and the sun disappeared.

毛布(もうふ)で体(からだ)を覆(おお)って、寒(さむ)さをしのいだ。

I covered myself with a blanket to keep out the cold.

雪(ゆき)が山(やま)を覆(おお)っていてすごく美(うつく)しい。

The snow covers the mountain and it's very beautiful.

母：「なんか元気なさそうだね。」ひろし：「うん、悲しみで心が____われている気分なんだ。」

Mother: "You don't seem very energetic." Hiroshi: "Yeah, I feel like my heart is covered in sadness."

妹：「今日の夕焼けすごいね！」姉：「ほんと。空全体が赤く____われていて、まるで絵みたい。」

Younger sister: "Today's sunset is amazing!" Older sister: "Really. The whole sky is covered in red, it's like a painting."