This is the 737th most frequent Dutch word.
dergelijke
"Such" or "similar."
As a determiner, 'dergelijke' is used here to refer to or emphasize activities of a particular type, previously mentioned or implied.
Hij heeft geen interesse in dergelijke activiteiten.
He has no interest in such activities.
Here, 'dergelijke' functions as a qualifier to specify problems similar to the context provided.
Voor dergelijke problemen moet je naar een specialist gaan.
For such problems, you should go to a specialist.
In this case, 'dergelijke' is used to signify similar items or concepts completing an enumerated list.