How do you spell Underhand

Available Definitions:
1)  a. - Secret; clandestine; hence, mean; unfair; fraudulent.
2)  a. - Done, as pitching, with the hand lower than the shoulder, or, as bowling, with the hand lower than elbow.
3)  adv. - By secret means; in a clandestine manner; hence, by fraud; unfairly.
4)  adv. - In an underhand manner; -- said of pitching or bowling.