from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Marked by or done in a deceptive, secret, or sly manner; dishonest and sneaky. See Synonyms at secret.
- adj. Sports Executed with the hand brought forward and up from below the level of the shoulder; underarm: an underhand pitch.
- adv. With an underhand movement: Throw the ball underhand.
- adv. In a sly and secret way.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. dishonest and sneaky; done in a secret or sly manner
- adj. thrown etc with the hand brought forward and up from below
- adv. with an underhand movement
- adv. in a sly, sneaky or secret manner
from the GNU version of the Collaborative International Dictionary of English
- adj. Secret; clandestine; hence, mean; unfair; fraudulent.
- adj. Done, as pitching, with the hand lower than the shoulder, or, as bowling, with the hand lower than the elbow.
- adv. By secret means; in a clandestine manner; hence, by fraud; unfairly; dishonorably.
- adv. In an underhand manner; thrown with the hand no higher than the shoulder and the palm turned upward during part of the pitch; -- said of pitching or bowling a ball.
from The Century Dictionary and Cyclopedia
- By secret means; in a clandestine manner, and often with an evil design.
- By fraud; by fraudulent means.
- Secret; clandestine: usually implying meanness or fraud, or both.
- Sly; contriving; deceitful.
- Performed or done with the knuckles of the hand turned under, the palm upward, and the thumb turned from the body: as, underhand bowling in cricket.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. slyly and secretly
- adj. with hand brought forward and up from below shoulder level
- adj. marked by deception
- adv. with the hand swung below shoulder level
Old English under hand (Wiktionary)