One who is engages in passimism. Passimists hate on things from the past regardless of the subject's actual quality. Someone who is a passimist may also be referred to as "passimistic".
I'm a passimist and therefore I must say that hair metal sucked, regardless of all the evidence to the contrary.
by flashadams May 24, 2010
Person: ugh you're such a passimist
Passimist: what's passimist?
Person: The annoying person sitting on my left.
Passimist: what's passimist?
Person: The annoying person sitting on my left.
by Apsyeusj May 1, 2014