赤あからむ

あ

か

ら

む

赤らむ · godan verb (-mu)

Meanings

godan verb (-mu), intransitive verb

become red; redden; blush

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

〈人ひと〉の顔かおが赤あからむsomeone's face turns red/blushes
彼かの女じょは褒ほめられて顔かおが赤あからんだ。
She blushed when she was praised.
東ひがしの空そらが赤あからむthe eastern sky turns red (at dawn)
夜よ明あけ前まえ、東ひがしの空そらが赤あからんできた。
Before dawn, the eastern sky began to turn red.
頬ほおが赤あからむone's cheeks flush/redden
恥はずかしさで頬ほおが赤あからんだ。
Her cheeks flushed red from embarrassment.

赤あからめるN1
赤らめる is the transitive form meaning to make something (like one's face) red, while 赤らむ is intransitive, describing something becoming red on its own.

紅こう潮ちょう
紅潮する describes a face flushing red from emotion or excitement, while 赤らむ is a more literary word for something turning red, including the sky.
上じょう気き
上気する means to feel flushed or light-headed with blood rushing to the face, whereas 赤らむ simply describes the visible reddening itself.

Derived from 赤 (aka, 'red') + らむ, a verb-forming suffix indicating a state or tendency. The exact historical derivation of らむ is uncertain.