Where does “δικαιάδικος” come from?

δικαιάδικος (Ancient Greek) comes from Ancient Greek ἄδικος, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.

δικαιάδικος (Ancient Greek): neither just nor unjust

Definitions

neither just nor unjust

Ancestry of “δικαιάδικος”, step by step

δικαιάδικος traces back through two separate lines of ancestry.

via Ancient Greek ἄδικος

Step	Language	Word	Meaning
1	Ancient Greek	ἄδικος	unjust; wrong
2	Ancient Greek	ἀ-	The alpha privativum, used to make words that...
3	Proto-Hellenic	hə-	same; together
4	Proto-Indo-European	sm̥-	one; with, together
5	Proto-Indo-European	sem-	together, one

via Ancient Greek δίκαιος

Step	Language	Word	Meaning
1	Ancient Greek	δίκαιος	observant of custom, orderly, civilized;...
2	Ancient Greek	δῐ́καιος	just

Every word from Proto-Indo-European sem- →Every word from Ancient Greek ἀ- →Every word from Proto-Indo-European sm̥- →