Definition of youngly in US English:

youngly

adverb

  • 1In the manner of a young person; youthfully; immaturely.

  • 2In youth; when one is young; early in life. Now rare.

Origin

Mid 16th century; earliest use found in Thomas More (1478–1535), lord chancellor, humanist, and martyr. From young + -ly.

Pronunciation

youngly

/ˈjʌŋli/