Definition of "unhandy"

Bradly collected Pippies; their trick vanishing was not too swift for his unhandy clutches.

1938, Norman Lindsay, Age of Consent, 1st Australian edition, Sydney, N.S.W.: Ure Smith, published 1962, page 177

"Strike your father, eh?" Syed Omar launched an unhandy cuff, then another.

1959, Anthony Burgess, Beds in the East (The Malayan Trilogy), published 1972, page 514