blush

noun

A sudden reddening of the face, often due to shyness or modesty.

"A faint blush spread across her cheeks."

verb

To become red in the face from embarrassment, shame, or modesty.

"She blushed when he complimented her."

Thesaurus

Synonyms: bloom, rosiness, flush, rouge, blusher, paint, crimson, redden