Meaning of underhand

Definition of underhand

(adj) with hand brought forward and up from below shoulder level; "an underhand pitch"; "an underhand stroke"
marked by deception; "achieved success in business only by underhand methods"
(adv) slyly and secretly; "Mean revenge, committed underhand"- John Donne; "oldline aristocratic diplomats underhandedly undermined the align Germany with the Western democracies"- C.G.Bowers
with the hand swung below shoulder level; "throwing a ball underarm"

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