Where does “συνναυμαχέω” come from?

συνναυμαχέω (Ancient Greek) comes from Ancient Greek ναυμαχέω, from Ancient Greek ναῦς, from Proto-Indo-European néh₂us, from Proto-Indo-European (s)neh₂- — to swim; to float.

συνναυμαχέω (Ancient Greek): to engage in a sea battle along with

Definitions

to engage in a sea battle along with

Ancestry of “συνναυμαχέω”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ναυμαχέω	to fight by sea
2	Ancient Greek	ναῦς	a ship
3	Proto-Indo-European	néh₂us	boat
4	Proto-Indo-European	(s)neh₂-	to swim; to float

Every word from Proto-Indo-European (s)neh₂- →Every word from Proto-Indo-European néh₂us →Every word from Ancient Greek ναῦς →