Where does “ristihäivytys” come from?

ristihäivytys (Finnish) comes from Finnish Risti, from Finnish -iäinen, from Finnish -inen, from Finnish -uus, from Proto-Finnic -uc — -ness, -hood.

Ancestry of “ristihäivytys”, step by step

ristihäivytys traces back through two separate lines of ancestry.

via Finnish Risti

StepLanguageWordMeaning
1FinnishRisticross
2Finnish-iäinenFront vowel variant of -iainen
3Finnish-inen-like, -ous, -y; -en; Creates adjectives from...
4Finnish-uusForms nouns from adjectives, expressing a quality
5Proto-Finnic-uc-ness, -hood

via Finnish häivytys

StepLanguageWordMeaning
1Finnishhäivytysfadeout, fade
2FinnishhäivyttääTo fade out
3Finnish-ttääFront vowel variant of -ttaa
4Proto-Finnic-ttadakCreates causative verbs from regular verbs,...
5Proto-Uralic-kta-
Every word from Proto-Finnic -ucEvery word from Finnish -inenEvery word from Finnish -uus