明あかるさ

noun

brightness; luminance; cheerfulness

Refers to the degree of light (physical brightness) or to a cheerful, positive atmosphere or personality. The context usually makes the intended meaning clear.

• 部屋へやの明あかるさを調ちょう節せつしてください。

  Please adjust the brightness of the room.

• 彼かの女じょの明あかるさにみんなが元げん気きづけられた。

  Everyone was cheered up by her cheerfulness.