boyishly
/ˈbɔɪɪʃli/
adverb
- In a manner that is typical of a boy, especially with youthful energy, enthusiasm, or playfulness.
- He grinned boyishly when he saw the birthday cake.
- The old man still dressed boyishly in sneakers and a baseball cap.
- She ran boyishly across the field, laughing all the way.
Synonyms