De or het mensenkennis?

The correct Dutch article is:

de mensenkennis

Rule Words ending in -nis: usually de. See the rule
Meaning (Dutch) ervaring/inzicht in het karakter van de mens

How to use mensenkennis

the mensenkennisde mensenkennis
this mensenkennisdeze mensenkennis
that mensenkennisdie mensenkennis
our mensenkennisonze mensenkennis
your mensenkennisjouw mensenkennis
every mensenkenniselke mensenkennis
which mensenkennis?welke mensenkennis?
a big mensenkennis / the big mensenkenniseen grote mensenkennis, de grote mensenkennis

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).