From Wiktionary, the free dictionary
From wel + -e- + -tjes.
welletjes (invariable)
- (informal) enough
En nu is het welletjes!- That’s quite enough already!
- Welletjes is only used predicatively and usually expresses mild annoyance, but also has an ironic connotation, as if one were talking to a child.
welletjes
- plural of welletje