eroticise

The story

1. Proto-Indo-European*h₁rem-
2. Proto-Indo-European*h₁rém-e-tider.?
3. Ancient Greekἐράω (eráō)
4. Ancient Greekἔρως (érōs)
5. Ancient Greekἐρωτῐκός (erōtĭkós)
6. Latinerōticu
7. Frenchérotique
8. Englisherotic
9. English todayeroticise

From erotic + -ise.