Where does “nonjuvenile” come from?

nonjuvenile (English) comes from English juvenile, from Latin iuvenīlis, from Latin -ilis, from Proto-Italic -elis, from Proto-Indo-European -elis, from Proto-Indo-European -lós — Forms agent nouns from verbal roots.

nonjuvenile (English): Not juvenile; adult; One who is not a juvenile

Definitions

Not juvenile; adult; One who is not a juvenile

Ancestry of “nonjuvenile”, step by step

nonjuvenile traces back through two separate lines of ancestry.

via English juvenile

Step	Language	Word	Meaning
1	English	juvenile	Young; not fully developed; Characteristic of...
2	Latin	iuvenīlis	youthful, juvenile
3	Latin	-ilis	-ile
4	Proto-Italic	-elis	—
5	Proto-Indo-European	-elis	—
6	Proto-Indo-European	-lós	Forms agent nouns from verbal roots

via English non

Step	Language	Word	Meaning
1	English	non	Obsolete form of none
2	French	non	no; not; a no, a negative response
3	Old French	non	no; not; Alternative form of nom
4	Latin	nōn	not
5	Old Latin	noenum	—
6	Proto-Indo-European	óynos	one; single

Every word from Proto-Indo-European -lós →Every word from Latin -ilis →Every word from Latin iuvenīlis →