blush

Noun

• sudden reddening of the face (as from embarrassment or guilt or shame or modesty)

• a rosy color (especially in the cheeks) taken as a sign of good health

Verb

• become rosy or reddish
  • her cheeks blushed in the cold winter air
    

• turn red, as if in embarrassment or shame
  • The girl blushed when a young man whistled as she walked by
    

Related words

• Synonyms: 
  flush , bloom , rosiness , crimson , redden