γέρος

Etymology
From.

Noun

 * 1) old man elderly male person
 * 2)  old man one's father
 * 1)  old man one's father

Usage notes

 * can be used adjectivally and has the comparatives:
 * But:
 * The more common: is not used of people's age.
 * The more polite: is used when referring to an old person.
 * The more common: is not used of people's age.
 * The more polite: is used when referring to an old person.