English
juvenilely
From juvenile + -ly.
Formed from juvenile + -ly
Proto-Indo-European *h₂ey- ‘vital force, life, age, eternity’
…
Proto-Indo-European *h₂yéwHō ‘young’
Proto-Italic *juwō ‘young’
Latin iuvenis ‘young’
Latin iuvenīlis ‘youthful’
English juvenile
Today it means
adv In a juvenile manner.
Language periods are conventional ranges, not dates for this word.
Etymograph / juvenilely