How am I in a failing arguement? People use adjectives all the time to describe a body of work. Adjectives are used to modify a noun or pronoun. And guess what? Pretentious is an adjective. We were using it just fine. The english language allows it. You are the one not showing us how we were using it incorrectly.
http://dictionary.reference.com/browse/adjective
ad⋅jec⋅tive
noun 1. Grammar. any member of a class of words that in many languages are distinguished in form, as partly in English by having comparative and superlative endings, or by functioning as
modifiers of nouns, as good, wise, perfect.
http://dictionary.reference.com/browse/pretentious
pre⋅ten⋅tious  
adjective 1.
full of pretense or pretension.
2. characterized by assumption of dignity or importance.
3. making an exaggerated outward show; ostentatious.
WOAH!!! Did you catch that? So again, you're wrong. We can use adjectives to describe something that isn't a person, it just has to be a noun. Pretentious is an adjective, and we're using it to describe a noun. It sucks to be condescending and have it blow up in your face right?