赤あからむ

godan verb (-mu), intransitive verb

become red; redden; blush

Describes something turning red, often used for faces, cheeks, or the sky at dawn. Intransitive.

• 恥はずかしくて顔かおが赤あからんだ。

  My face turned red from embarrassment.

• 東ひがしの空そらが赤あからみ始はじめた。

  The eastern sky began to redden.