From en.wiktionary.org:
[Ketter]
** Dutch
*** Etymology
From [nl], from [nl], from [nl], originally used by practitioners of
Novatianism in relation to themselves.
*** Pronunciation
- [nl]
- [nl]
- [nl]
- [nl]
*** Noun
[m]
1. heretic
**** Derived terms
{{col|nl |aartsketter |als een ketter |ketterdom |ketterij |ketterproces
|ketters |kettervreter |verketteren }}