Where does “-it” come from?

-it (Old Norse) comes from Old Norse -inn, from Proto-Norse -īna-, from Proto-Germanic -īnaz, from Proto-Indo-European -iHnos, from Proto-Indo-European -no- — adjectival suffix.

Ancestry of “-it”, step by step

StepLanguageWordMeaning
1Old Norse-innUsed to create adjectives from nouns, meaning...
2Proto-Norse-īna-—
3Proto-Germanic-īnaz-en
4Proto-Indo-European-iHnosCreates adjectives of materials
5Proto-Indo-European-no-adjectival suffix

Words derived from “-it”

Every word from Proto-Indo-European -no- →Every word from Proto-Germanic -īnaz →Every word from Proto-Indo-European -iHnos →