Unqualified
Part of speech: adjective
Definition: not qualified, ineligible, unfit for a position or task not elaborated upon, undescribed
Example sentence: I was completely unqualified to get into Harvard. But then I went to my interview for Harvard, and the woman asked, 'Why do you want to go here?' And I took out all of my comedy writing samples that I had done. I couldn't have been more delusional in terms of what I thought they wanted in a candidate for college.
Incapable
Part of speech: adjective
Definition: Not being capable (of doing something); unable.
Example sentence: I am incapable of conceiving infinity, and yet I do not accept finity.