Where does “puerilism” come from?

puerilism (English) comes from English puerile, from Latin puerīlis, from Latin -ilis, from Proto-Italic -elis, from Proto-Indo-European -elis, from Proto-Indo-European -lós — Forms agent nouns from verbal roots.

puerilism (English): Childlike behavior by an adult, especially as...

Definitions

  1. Childlike behavior by an adult, especially as...

Ancestry of “puerilism”, step by step

puerilism traces back through two separate lines of ancestry.

via English puerile

StepLanguageWordMeaning
1EnglishpuerileChildish; trifling; silly; Characteristic of, or...
2Latinpuerīlisboyish, youthful
3Latin-ilis-ile
4Proto-Italic-elis
5Proto-Indo-European-elis
6Proto-Indo-European-lósForms agent nouns from verbal roots

via French puérilisme

StepLanguageWordMeaning
1Frenchpuérilismepuerilism
Every word from Proto-Indo-European -lósEvery word from Latin -ilisEvery word from Latin puerīlis