Dutch word onzeker comes from Dutch zeker, Dutch on- (On, without Un-, in-.)

Detailed word origin of onzeker

Dictionary entry	Language	Definition
zeker	Dutch (nld)	Certain, sure. Confident, secure. Confirmed Certainly, surely. Particularly, even more unambiguously.
on-	Dutch (nld)	On, without Un-, in-.
onzeker	Dutch (nld)	Insecure. Uncertain.

Words with the same origin as onzeker