Entry 3 senses · 2 variants Webster, 1913 Youngly · Young·ly · IPA a. adv. 01 a. Like a young person or thing; young; youthful. 1. Like a young person or thing; young; youthful.[Obs.] 02 adv. In a young manner; in the period of youth; early in life. 1. In a young manner; in the period of youth; early in life.[Obs.] 2. Ignorantly; weakly.[R.]