De or het duweenheid?

The correct Dutch article is:

de duweenheid

Rule Words ending in -heid: almost always de. See the rule

How to use duweenheid

the duweenheidde duweenheid
this duweenheiddeze duweenheid
that duweenheiddie duweenheid
our duweenheidonze duweenheid
your duweenheidjouw duweenheid
every duweenheidelke duweenheid
which duweenheid?welke duweenheid?
a big duweenheid / the big duweenheideen grote duweenheid, de grote duweenheid