Wonder Woman was only shown to have punched an opponent on four different occasions. The first three punches occurred in various scenes of the Wonder Woman pilot and the fourth punch happened in the episode "Stolen Faces". A slight variation of a punch was used on an alien in the episode "The Boy Who Knew Her Secret". Every other time she had to fight an opponent she typically either threw them or used the lasso to capture them.
The character Wonder Woman only has one line: "Hold it!"