From Koine Greek καθηγητής (kathēgētḗs), from Ancient Greek καθηγέομαι (kathēgéomai, “to direct, guide, teach”) + -τής (-tḗs, “agent noun suffix”), the former component from κατα- (kata-, “down, against”) + ἡγέομαι (hēgéomai, “to precede, lead the way”).
καθηγητής • (kathigitís) m (plural καθηγητές, feminine καθηγήτρια)
| singular | plural | ||
|---|---|---|---|
| nominative | καθηγητής • | καθηγητές •, καθηγητάδες • | |
| genitive | καθηγητή • | καθηγητών •, καθηγητάδων • | |
| accusative | καθηγητή • | καθηγητές •, καθηγητάδες • | |
| vocative | καθηγητή • | καθηγητές •, καθηγητάδες • | |
| The second form of plural -άδες, colloquial, demotic, sometimes ironic. * There is a learned genitive singular καθηγητού. * The vocative singular καθηγητά is used in the phrase "κύριε καθηγητά". | |||