blush

1 blush /ˈblʌʃ/ verb
blushes; blushed; blushing
1 blush
/ˈblʌʃ/
verb
blushes; blushed; blushing
Britannica Dictionary definition of BLUSH
[no object]
1 
: to become red in your face because you are ashamed, embarrassed, confused, etc.
2 
: to be embarrassed
2 blush /ˈblʌʃ/ noun
plural blushes
2 blush
/ˈblʌʃ/
noun
plural blushes
Britannica Dictionary definition of BLUSH
1 
[count] : the red color that spreads over your face when you are ashamed, embarrassed, confused, etc.
2 
[count] : a slight red or pink color
3 
[noncount] US : a cream or powder that some people put on their cheeks to make their cheeks pink or reddish
— called also (chiefly British) blush*er

at first blush

— see 1first

spare someone's blushes

— see 2spare