coyly

/ˈkɔɪ.li/
adverb
  1. In a shy or modest manner, often with playful or flirtatious intent.
    • She coyly glanced at him from behind her book.
    • He coyly admitted that he had rehearsed his speech for hours.
    • The child coyly hid her face when asked to sing.
Antonyms
What does "coyly" mean? | whatsthatwordmean | whatsthatwordmean