This is the 139th most frequent Azerbaijani word.
uzun
"Uzun" means "long" in English.
Here, 'uzun' is used as an adjective to describe the length of the road.
Bu yol çox uzundur.
This road is very long.
In this sentence, 'uzun-uzun' is used adverbially to describe the extent or length of time he listened.
O, məni uzun-uzun dinlədi.
He listened to me intently for a long time.
In this example, 'uzun müddət' is a phrase indicating a lengthy period of time.