chessaholic

The story

1. Proto-Indo-European*tek-
2. Proto-Indo-Iranian*kšáyati
3. Proto-Iranian*xšáyati
4. Old Persian𐏋 (XŠ)
5. Middle Persian𐭬𐭫𐭪𐭠 (mlkʾ /⁠šāh⁠/)
6. Classical Persianشاه (šāh)
7. Arabicشَاه (šāh)
8. Old Frencheschés
9. Middle Englishches
10. Englishchess
11. Akkadian𒎎𒋆𒁉𒍣𒁕 (guḫlum)
12. Aramaicכוחלא (kuḥlā)
13. Arabicكُحْل (kuḥl)
14. Andalusian Arabicكُحُول (kuḥūl)
15. Medieval Latinalcoho
16. Middle Englishalcofol
17. Englishalcohol
18. Englishalcoholic
19. English todaychessaholic

From chess + -aholic.