This is the 2374th most frequent Dutch word.
troffen
"Troffen" means "to hit," "to meet," or "to strike" depending on context.
In this sentence, 'troffen' means 'affected' or 'struck', describing an event impacting something.
De aardbeving trof vele gebieden in de stad.
The earthquake affected many areas in the city.
Here 'trof' (a form of 'troffen') is used in combination with 'aan' to mean 'came across' or 'discovered'.
Hij trof een verloren portemonnee aan op straat.
He came across a lost wallet on the street.
Here 'troffen' is used to mean 'met' or 'encountered', indicating a meeting between people.