This is the 9960th most frequent Japanese word.
赤面
Blushing or reddening of the face due to embarrassment.
In this sentence, 赤面 is used to describe a physical reaction of blushing out of embarrassment.
彼は自分のミスに赤面した。
He blushed due to his mistake.
Here, 赤面 indicates a reaction of a person feeling flattered or shy when receiving praise.
彼女は褒められて赤面してしまった。
She blushed because she was complimented.
赤面 is used figuratively to describe a reaction of feeling embarrassed or flustered upon hearing something.