Where does “infantile” come from?

Infantile comes from Latin infans, literally "unable to speak," from Latin in- (not) and Latin fārī (to speak), ultimately from Proto-Indo-European roots meaning "not" and "to speak."

infantile (English): Pertaining to infants; Childish; immature

Definitions

  1. Pertaining to infants; Childish; immature

Ancestry of “infantile”, step by step

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

Words derived from “infantile”

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Proto-Italic en →