Dutch word grappig comes from Dutch -ig, Dutch grap (Joke.)

Detailed word origin of grappig

Dictionary entry	Language	Definition
-ig	Dutch (nld)	-ed, having (when attached to a noun preceded by an adjective that describes the noun). -y; forms adjectives from nouns.
grap	Dutch (nld)	Joke.
grappig	Dutch (nld)	Funny.

Words with the same origin as grappig