Esperanto

The story

1. Proto-Indo-European*speh₁-
2. Proto-Indo-European*spéh₁s
3. Proto-Italic*spēs
4. Old Latinspēs
5. Old Latin*spēsō
6. Latinspērāre
7. Old Frenchesperer
8. Middle Frenchesperer
9. Frenchespérer
10. Latinspērāre
11. Italiansperare
12. Latinsperō
13. Old Spanishesperar
14. Spanishesperar
15. Latinspērāre
16. Old Galician-Portugueseasperar
17. Portugueseesperar
18. Latinspērāre
19. Old Occitanesperar
20. Occitanesperar
21. Latinspērāre
22. Catalanesperar
23. Esperantoesperi
24. Esperantoesperanto
25. EsperantoEsperanto
26. English todayEsperanto

Learned borrowing from Esperanto Esperanto. Originally, this was the pseudonym assumed by the creator of the language, L. L. Zamenhof, and the language was called Lingvo Internacia (“international language”). The term first appears in the publication Science in 1892.