- underachiever, underperformer, nonachiever - a student who does not perform as well as expected or as well as the IQ indicates
--1 is a kind of student, pupil, educatee
Derived form: verb underperform1 - underperformer - a business that is less successful than expected
--2 is a kind of business, concern, business concern, business organization, business organisation
Derived form: verb underperform1