Where does “profundaĝa” come from?

profundaĝa (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.

profundaĝa (Esperanto): elderly, extremely old

Definitions

  1. elderly, extremely old

Ancestry of “profundaĝa”, step by step

profundaĝa traces back through two separate lines of ancestry.

via Esperanto aĝo

StepLanguageWordMeaning
1Esperantoaĝoage
2Frenchâgeage
3Middle Frenchâge
4Old FrenchaigeAlternative form of aage
5Old FrenchedageAlternative form of aage
6Old Frenchaageage
7Vulgar Latinaetaticumage
8Latinaetāsthe period of a life: lifetime, lifespan
9Latinaevitās
10Proto-Italicaiwotātsage
11Proto-Indo-Europeanh₂eyu-vitality; eternal; vital force, life, long life,...
12Proto-Indo-Europeanh₂ey-vital force, life, age, eternity; day, morning

via Esperanto profunda

StepLanguageWordMeaning
1Esperantoprofundadeep
2Latinprofundusdeep, profound; intense, extreme, profound;...
3Latinprōfor
4Latinratusconsidered, having been considered; established,...
5Latinrēōrto reckon, calculate
6Proto-Italicrēōrto reckon, to calculate; to think, to deem, to...
7Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
8Proto-Indo-Europeanh₂er-to fit, to fix, to put together
Every word from Proto-Indo-European h₂ey-