* χαμένος (chamenos): This is the most common and general word for "lost," meaning something is missing or can't be found. It can refer to objects, people, or even one's way.
* απολωμένος (apoloménos): This word implies a more permanent or irreversible loss, like something that's been destroyed or is gone forever.
* χάθηκα (chathíka): This means "I got lost," referring to being lost in a place or situation.
So, the best translation depends on what you mean by "lost." For most situations, χαμένος (chamenos) will be correct.