This is the 112th most frequent Greek word.
πρώην
"Πρώην" means "former" or "ex."
Here, 'πρώην' refers to a prior romantic relationship, indicating that Maria is no longer my girlfriend.
Η Μαρία είναι η πρώην φίλη μου.
Maria is my ex-girlfriend.
Here, 'πρώην' is used to describe a prior usage or function of an object, specifically that the building was used as a factory in the past.
Αυτό το κτήριο ήταν πρώην εργοστάσιο.
This building was a former factory.
In this sentence, 'πρώην' denotes a previous position or role held by someone, in this case, the prime minister.