1. Pertaining to how a person can use both hands with identical ease: It is necessary for Dr. Jones to work ambidextrously when performing surgery, because it is obvious that using only one hand wouldn’t be possible!
2. Descriptive of how someone is quick or clever in a cognitive way: Joan was a good player at scrabble, being ambidextrously talented at finding new words for the game.
3. Referring to acting or behaving in a false and insincere way: Jack ambidextrously deceived his friends by pretending to support them in the demonstration and then purposely never showing up!