Where does “spontāneus” come from?

spontāneus (Latin) comes from Latin -āneus, from Latin -eus, from Proto-Italic *-eos — Forms adjectives indicating being formed out of a material.

spontāneus (Latin): voluntary, spontaneous

Definitions

  1. voluntary, spontaneous

Ancestry of “spontāneus”, step by step

StepLanguageWordMeaning
1Latin-āneusforming adjectives Of or pertaining to; -aneous
2Latin-eusargentum + API → argenteus; ferrum + API →...
3Proto-Italic*-eosForms adjectives indicating being formed out of a material

Words derived from “spontāneus

Every word from Proto-Italic *-eosEvery word from Latin -eusEvery word from Latin -āneus