* Επιζών (EpizóN): This is the most common and generally accepted translation. It literally means "one who survives" and is suitable for most situations.
* Διώνυξ (Diónyx): This word is less common but can be used in a more literary or dramatic context. It implies someone who has overcome a difficult struggle or battle.
* Ο επιζήσας (O epizó sas): This is the masculine singular participle of "to survive." You would adjust the article and ending depending on the gender and number.
The best choice will depend on the specific nuance you want to convey. For most everyday uses, Επιζών (EpizóN) is perfectly adequate.