Where does “Karelo-Finnish” come from?

Karelo-Finnish (English) comes from English Finnish, from English -ish, from Middle English -ish, from Old English -isċ, from Proto-West Germanic -isk, from Proto-Germanic -iskaz, from Proto-Indo-European -iskos — Characteristic of, typical of, pertaining to.

Ancestry of “Karelo-Finnish”, step by step

Karelo-Finnish traces back through two separate lines of ancestry.

via English Finnish

StepLanguageWordMeaning
1EnglishFinnishOf or pertaining to Finland; Of or pertaining to...
2English-ishTypical of, similar to, being like; Somewhat,...
3Middle English-ishAlternative form of -yssh
4Old English-isċ-ish
5Proto-West Germanic-iskCreates adjectives from nouns
6Proto-Germanic-iskazForms adjectives from nouns with the sense of...
7Proto-Indo-European-iskosCharacteristic of, typical of, pertaining to

via Ido karelo

StepLanguageWordMeaning
1Idokarelotile, square
Every word from Proto-Indo-European -iskosEvery word from English -ishEvery word from Proto-Germanic -iskaz