existential nincompoop

A technical philosophical term coined by a great philosophy professor
1) One that is completely and utterly ignorant to their existential worth.

2) A person that does not allow for existential growth due to their lack of understanding of either themselves or of the necessity

Maxwell is such a nihilist, he doesn't get out of bed all day, he doesn't contribute to society in any way. He is SUCH an existential nincompoop.