counteranion

The story

1. Proto-Indo-European*ḱe?
2. Proto-Indo-European*ḱóm
3. Proto-Italic*kom
4. Proto-Italic*kom-
5. Proto-Italic*komteros
6. Proto-Italic*komterād
7. Latincontrā
8. Old Frenchcontre-
9. Anglo-Normancountre-
10. Middle Englishcounter-
11. Englishcounter-
12. Proto-Indo-European*h₂en-
13. Proto-Hellenic*aná
14. Ancient Greekᾰ̓νᾰ́ (ănắ)
15. Ancient Greekᾰ̓νᾰ- (ănă-)
16. Proto-Indo-European*h₁ey-
17. Proto-Indo-European*h₁éyti
18. Proto-Hellenic*éimi
19. Ancient Greekῐ̓όν (ĭón)
20. Ancient Greekἀνῐόν (anĭón)
21. Englishanion
22. English todaycounteranion

From counter- + anion.