"Op het genoemde" itself isn't a four-letter word in Dutch. It's a two-word phrase meaning "on the aforementioned" or "on the mentioned."
However, depending on the context, there could be a four-letter word that follows "op het genoemde." For example:
- Op het genoemde adres (on the mentioned address)
- Op het genoemde moment (at the mentioned moment)
- Op het genoemde onderwerp (on the mentioned subject)