below par vs subnormal

below par

• Not up to the average or normal standard. 

• (of a score) Less than par for the hole or course (which in golf, means better than par). 

• Having a price below its face value. 

subnormal

• A person whose abilities are less than normal. 

• That part of the axis of a curved line which is intercepted between the ordinate and the normal. 

• denormal 

• Less than normal.