antibot

The story

1. Proto-Indo-European*h₂ent-
2. Proto-Indo-European*h₂énts
3. Proto-Indo-European*h₂énti
4. Ancient Greekᾰ̓ντῐ́ (ăntĭ́)
5. Ancient Greekἀντι- (anti-)
6. Englishanti-
7. Proto-Indo-European*h₃erbʰ-
8. Proto-Indo-European*h₃órbʰos
9. Proto-Balto-Slavic*árbas
10. Proto-Slavic*orbъ
11. Proto-Slavic*orbiti
12. Proto-Slavic*orbota
13. Old Czechrobota
14. Czechrobota
15. Czechrobot
16. Englishrobotclip.
17. Englishbot
18. English todayantibot

From anti- + bot.