Adjective: underhanded 'ún-du(r)'han-did
- Marked by deception
"achieved success in business only by underhanded methods";
- sneaky, underhand
- (sport) with hand brought forward and up from below shoulder level
"The pitcher used an underhanded throwing motion";
- underhand, underarm
See also: bent [Brit, informal], corrupt, crooked [informal]
Antonym: overhanded [rare]
Encyclopedia: Underhanded