Where does “infanaĝo” come from?

infanaĝo (Esperanto) comes from Esperanto aĝo, from French âge, from Middle French âge, from Old French aige, from Old French edage, from Old French aage, from Vulgar Latin aetaticum, from Latin aetās — vital force, life, age, eternity; day, morning.

infanaĝo (Esperanto): childhood, infancy

Definitions

childhood, infancy

Ancestry of “infanaĝo”, step by step

infanaĝo traces back through two separate lines of ancestry.

via Esperanto aĝo

Step	Language	Word	Meaning
1	Esperanto	aĝo	age
2	French	âge	age
3	Middle French	âge	—
4	Old French	aige	Alternative form of aage
5	Old French	edage	Alternative form of aage
6	Old French	aage	age
7	Vulgar Latin	aetaticum	age
8	Latin	aetās	the period of a life: lifetime, lifespan
9	Latin	aevitās	—
10	Proto-Italic	aiwotāts	age
11	Proto-Indo-European	h₂eyu-	vitality; eternal; vital force, life, long life,...
12	Proto-Indo-European	h₂ey-	vital force, life, age, eternity; day, morning

via Esperanto infano

Step	Language	Word	Meaning
1	Esperanto	infano	child
2	French	enfant	child
3	Middle French	enfant	child
4	Old French	enfant	child
5	Latin	īnfāntem	—
6	Latin	īnfāns	speechless, inarticulate
7	Latin	īn-	un-, non-, not
8	Latin	în	in, at, on, upon, from (space)
9	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
10	Proto-Italic	en	in
11	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₂ey- →Every word from Proto-Indo-European h₂eyu- →Every word from Proto-Italic aiwotāts →