IPA: /ˈblʌʃɪŋli/
KK: /ˈblʌʃɪŋli/
In a way that shows embarrassment or shyness, often causing a person's face to turn red.
She smiled blushingly when complimented on her dress.
Blushingly → It is formed from "blush" (from Old English "blusian", meaning to redden or glow) and "-ingly" (a suffix used to form adverbs indicating manner). The word "blushingly" means in a manner that shows redness in the face, typically due to embarrassment or shyness.
Think of someone who is 'reddening' ('blush') in response to a situation, and the '-ingly' shows how they are doing it — that's why blushingly means doing something in a way that shows embarrassment.