Where does “-ic” come from?

-ic (Middle High German) comes from Old High German -ig, from Proto-West Germanic -g, from Proto-Germanic -gaz, from Proto-Indo-European -ḱos — -y, -ic.

Ancestry of “-ic”, step by step

StepLanguageWordMeaning
1Old High German-ig—
2Proto-West Germanic-gForms adjectives from nouns and verbs with a...
3Proto-Germanic-gaz-y
4Proto-Indo-European-ḱos-y, -ic

Words derived from “-ic”

Every word from Proto-Indo-European -ḱos →Every word from Proto-Germanic -gaz →Every word from Proto-West Germanic -g →