This is the 1169th most frequent Dutch word.
vieren
"Vieren" means "to celebrate."
The verb 'vieren' is used in the context of celebrating or partaking in festivities.
Wij vieren onze verjaardag met een groot feest.
We celebrate our birthday with a big party.
'Vieren' in this sentence also means to celebrate, specifically to mark a victory or achievement.
Na het behalen van het examen, gingen ze de overwinning uitgebreid vieren.
After passing the exam, they went on to celebrate the victory extensively.
Here, 'vieren' refers to the action of lowering something, specifically a flag, in a controlled manner.