cack-handed

• cackhanded
• keck-handed
• keckhanded

cag (“knob, stump”) +‎ handed;[1] cf. also cack (“excrement”).

cack-handed (comparative more cack-handed, superlative most cack-handed)

1. Clumsy; inept.
   • 1905, Lady Catherine Milnes Gaskell, Spring in a Shropshire Abbey, London: Smith, Elder & Co., Chapter 4, pp. 177-178,

     Constance endeavoured to get eight little boys to dance also; but the little lads were to shy, what an old woman, speaking of her grandson, calls “too daffish and keck-handed to learn such aunty-praunty antics,” and all that Constance could get in the way of male support was to induce eight little lads to look on, bend their knees, and bow at intervals, whilst the maidens sang and danced.

   • 2001, Terry Eagleton, The Gatekeeper: A Memoir, New York: St. Martin’s Press, Chapter 4, p. 99,

     There is the chairperson who will introduce you by saying that you need no introduction, and who will bring the session to a close with some cack-handed joke based on a phrase plucked from your talk.

   • 2004, Andrea Levy, Small Island, London: Review, Chapter Fifty-eight, p. 516,

     ‘Just bend your arms and cradle him on them,’ I told her. She was so cack-handed I could hardly watch. I was short with her when I said, ‘Have you never held a baby before?’

2. Left-handed.
   • 1922, Edmund J. Sullivan, Line: An Art Study, London: Chapman & Hall, Chapter 8, p. 88,

     A left-handed child would be held up to ridicule, and the hand tied to prevent its use. In some parts of England left-handers are called “cack-handed” […]

3. Back-handed. (The addition of quotations indicative of this usage is being sought):

• cackhandedly
• cackhandedness