Learned pronouns: εαυτού, αλλήλων, ουδείς
The frozen reflexive, the reciprocal with no nominative, and the absolute negator of formal Greek.
Αλλήλων: reciprocity
Αλλήλων has no nominative — logically so: “one another” cannot be a subject. You meet it in the genitive and accusative, and above all in compounds: αλληλεγγύη, αλληλοβοήθεια, αλληλεπίδραση.
- Οι δύο πλευρές κατηγόρησαν η μία την άλλη.The two sides accused one another.
- Η αλληλεγγύη μεταξύ των κρατών-μελών.Solidarity among the member states.
Ουδείς and the frozen reflexive
Ουδείς / ουδεμία / ουδέν replaces κανένας in the formal register: «ουδεμία ευθύνη», «ουδέν σχόλιο». The ancient reflexive survives mainly in καθ’ εαυτόν, δι’ εαυτού, αφ’ εαυτού — unanalysable, learned as they are.