* μαθητής (mathētēs): This is probably the closest and most common translation. It refers to a student, pupil, or disciple, implying a formal learning situation.
* διδάσκαλος (didáskalos): Ironically, this word primarily means "teacher," but in some contexts, it can imply someone actively engaged in learning, especially in a self-directed way.
* μελετητής (meletētēs): This word means "one who studies" or "researcher," suggesting a more independent and in-depth approach to learning.
Therefore, μαθητής (mathētēs) is generally the best choice unless the context calls for a more specific meaning like independent study (μελετητής) or a more active, self-taught approach (possibly διδάσκαλος in a specific context).