blush · verb I /blʌʃ/
blush
B2 to become pink in the face, usually from embarrassment
Dictionary examples:
He blushes every time she speaks to him.
I blush to think what a fool I made of myself.
Learner example:
But there is one special "embarrassing moment" that even today I blush when I think about it. (First Certificate in English; B2; Portuguese)