A distinct type of Whipping Finger Technique which is physically distinguishable by striking in a forward circular direction - making contact with the tip(s) of the fingers of the hand, palm pointing relatively downward.

Comments:

This maneuver is most typically effected on a relatively vertical circle typically at groin height, but may be altered depending upon need.

Ideally, this maneuver is enacted with all four (4) fingers, but this is not a requirement.

The word underhand, in this case, relates to the orientation of the hand being palm down. But can also refer to the deceptiveness of this maneuver when executed to the groin from a Point of Origin hanging naturally at the side.