from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Chiefly British Left-handed.
- adj. Chiefly British Awkward; clumsy.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. clumsy
- adj. left-handed
- adj. back-handed
Perhaps from Old Norse keikr, bent backwards; akin to Danish keite, left-handed.(American Heritage® Dictionary of the English Language, Fourth Edition)
cack (“excrement”) + handed. (Wiktionary)