This is the 972nd most frequent Azerbaijani word.
oldular
"Oldular" means "they became" in English.
'Oldular' is used as a verb indicating that they became or were joyful in that context.
Onlar məclisdə çox şən oldular.
They were very joyful at the gathering.
'Oldular' here is a verb showing that the children attained the status of winners.
Uşaqlar məktəb bilik yarışmasında qalib oldular.
The children became winners in the school knowledge competition.
'Oldular' expresses a change of state, indicating becoming calm.