Where does “-achtig” come from?

-achtig (Middle Dutch) comes from Middle Dutch -haftig, from Dutch -ig, from Middle Dutch -ich, from Old Dutch -ig, from Proto-West Germanic -g, from Proto-Germanic -gaz, from Proto-Indo-European -ḱos — -y, -ic.

Ancestry of “-achtig”, step by step

StepLanguageWordMeaning
1Middle Dutch-haftig—
2Dutch-ig-y; forms adjectives from nouns; -ed, having
3Middle Dutch-ich-y
4Old Dutch-ig—
5Proto-West Germanic-gForms adjectives from nouns and verbs with a...
6Proto-Germanic-gaz-y
7Proto-Indo-European-ḱos-y, -ic

Words derived from “-achtig”

Every word from Proto-Indo-European -ḱos →Every word from Proto-Germanic -gaz →Every word from Dutch -ig →