This is the 323rd most frequent Slovenian word.
enkrat
"Enkrat" means "once" in English.
"Enkrat" is used to mean "only once" in this sentence.
Zgodi se le enkrat, zato moraš izkoristiti priložnost.
It happens only once, so you must seize the opportunity.
"Enkrat" is used to mean "sometime" here, indicating an unspecified future time.
Rad bi te obiskal nekega dne, morda enkrat pozimi.
I would like to visit you one day, maybe sometime in winter.
"Enkrat" is used to mean "one more time" or "another time" in this context.