Where does “kinderachtig” come from?

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

kinderachtig (Dutch): childish, infantile

Definitions

childish, infantile

Ancestry of “kinderachtig”, step by step

Step	Language	Word	Meaning
1	Dutch	-achtig	-like, -ish
2	Middle Dutch	-achtig	—
3	Middle Dutch	-haftig	—
4	Dutch	-ig	-y; forms adjectives from nouns; -ed, having
5	Middle Dutch	-ich	-y
6	Old Dutch	-ig	—
7	Proto-West Germanic	-g	Forms adjectives from nouns and verbs with a...
8	Proto-Germanic	-gaz	-y
9	Proto-Indo-European	-ḱos	-y, -ic

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