ONLINE GOLF DICTIONARY - U
uncock To straighten the wrists in the downswing.
underclubbing Using a club that does not give the needed distance
underspin Same as backspin.
unplayable lie A lie in which the ball is impossible to play such as in a thicket of trees.
up A shot reaching at least as far as the hole.
up A specified number of strokes you are ahead of your opponent in match play.
up and down Getting out of trouble or out of a hazard and into the hole.
upright swing A swing that carries the club head more directly backward and upward from the ball.
USGA United States Golf Association.