Where did gnarly come from?

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Tags

1. #comes
2. #unknown
3. #meaning
4. #later
5. #knotty
6. #origin
7. #spelling
8. #before
9. #sense
10. #stone
11. #variant
12. #misshapen
13. #unpleasant
14. #middle
15. #original
16. #gnarled
17. #english
18. #century
19. #knurled
20. #gnarly
21. #slang
22. #generally
23. #awful
24. #which