hotshot

The story

1. Proto-Indo-European*keHy-
2. Proto-Indo-European*dʰeh₁-
3. Proto-Indo-European*kéHidʰeti
4. Proto-Indo-European*kéHidos
5. Proto-Germanic*haitaz
6. Proto-West Germanic*hait
7. Old Englishhāt
8. Middle Englishhot
9. Englishhot
10. Proto-Indo-European*(s)kewd-
11. Proto-Indo-European*(s)kéwd-(o-m)?
12. Proto-Indo-European*(s)kewd-der.?
13. Proto-Indo-European*sket-der.?
14. Proto-Germanic*skut(t)-
15. Proto-Indo-European*(ó)-os
16. Proto-Germanic*skutą
17. Old Englishsċot
18. Middle Englishschot
19. Englishshot
20. English todayhotshot

From hot + shot.