This is the 767th most frequent Hungarian word.
eseményen
"At the event" or "on the event."
'eseményen' is used to denote the location of action, indicating that the action took place at a specific event.
Az eseményen sok érdekes emberrel találkoztam.
At the event, I met many interesting people.
'eseményen' specifies where the speaker experienced a pleasant time, thus referring to the place.
Jól éreztem magam az eseményen, amit a város szervezett.
I had a good time at the event organized by the city.
'eseményen' is used here to specify the location where the presentation took place, referring to the event as the setting of a showcase.