underhand, underhanded, underarm -- (with hand brought forward and up from below shoulder level; "an underhand pitch"; "an underhand stroke")
sneaky, underhand, underhanded -- (marked by deception; "achieved success in business only by underhand methods")
Overview of adv underhand
The adv underhand has 2 senses
underhandedly, underhand -- (slyly and secretly; "Mean revenge, committed underhand"- John Donne; "oldline aristocratic diplomats underhandedly undermined the attempt...to align Germany with the Western democracies"- C.G.Bowers)
underarm, underhand -- (with the hand swung below shoulder level; "throwing a ball underarm")
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