diagnosee

The story

1. Proto-Indo-European*dwóh₁
2. Proto-Indo-European*trísinflu.
3. Proto-Indo-European*dwís
4. Ancient Greekδιά (diá)
5. Ancient Greekδια- (dia-)
6. Proto-Indo-European*ǵneh₃-
7. Proto-Indo-European*ǵn̥h₃sḱéti
8. Proto-Hellenic*gignṓskō
9. Ancient Greekγῐγνώσκω (gĭgnṓskō)
10. Ancient Greekδῐαγῐγνώσκω (dĭagĭgnṓskō)
11. Ancient Greekδῐᾰ́γνωσῐς (dĭắgnōsĭs)
12. Latindiagnōsis
13. Englishdiagnosisbf.
14. Englishdiagnose
15. English todaydiagnosee

From diagnose + -ee.