depreciator vs disparager

depreciator and disparager both are nouns.

Word	Noun	Adjective	Verb	Adverb
depreciator	Yes	No	No	No
disparager	Yes	No	No	No

As nouns, depreciator and disparager are synonyms defined as:

depreciator and disparager: one who disparages or belittles the worth of something

Other synonyms of depreciator include detractor, knocker.

depreciator (noun)	disparager (noun)
one who disparages or belittles the worth of something	one who disparages or belittles the worth of something