This is the 698th most frequent Polish word.
kiedyś
"sometime" or "once"
In this sentence, 'kiedyś' means 'in the past,' referring to a time that is not specified but known to have occurred.
Kiedyś mieszkałem w Warszawie.
I used to live in Warsaw.
Here, 'kiedyś' indicates 'someday' or 'at some point in the future,' expressing uncertain or general time.
Kiedyś zobaczymy się ponownie.
Someday we will meet again.
In this example, 'kiedyś' implies 'ever' in a hypothetical or conditional context, often referring to a possible event.