Where does “infantileness” come from?

infantileness (English) comes from English infantile, from Latin infantilis, from Latin īnfāns, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

infantileness (English): quality of being infantile

Definitions

  1. quality of being infantile

Ancestry of “infantileness”, step by step

infantileness traces back through two separate lines of ancestry.

via English infantile

StepLanguageWordMeaning
1EnglishinfantilePertaining to infants; Childish; immature
2Latininfantilispertaining to an infant; infantile
3Latinīnfānsspeechless, inarticulate
4Latinīn-un-, non-, not
5Latinînin, at, on, upon, from (space)
6Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
7Proto-Italicenin
8Proto-Indo-Europeanh₁énin

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Proto-Italic en