Where does “spontaanius” come from?

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

spontaanius (Finnish): spontaneity

Definitions

  1. spontaneity

Ancestry of “spontaanius”, step by step

spontaanius traces back through two separate lines of ancestry.

via Finnish spontaani

StepLanguageWordMeaning
1Finnishspontaanispontaneous
2Latinspontāneusvoluntary, spontaneous
3Latin-āneusforming adjectives Of or pertaining to; -aneous
4Latin-eusargentum + API → argenteus; ferrum + API →...
5Proto-Italic*-eosForms adjectives indicating being formed out of a material

via Finnish uus

StepLanguageWordMeaning
1FinnishuusAlternative form of uusi
Every word from Proto-Italic *-eosEvery word from Latin -eusEvery word from Latin -āneus