disparager
dis·par·age
D0278500 (dĭ-spăr′ĭj)These verbs mean to minimize the value or importance of someone or something. Disparage implies a critical or dismissive attitude often accompanied by disrespect: "Leaders who wouldn't be caught dead making religious or ethnic slurs don't hesitate to disparage the 'godless' among us" (Daniel C. Dennett).
Denigrate often adds a note of contempt: "elitist music critics who denigrated jazz by portraying it as inferior to the classical tradition" (Tyler Stovall).
Belittle means to reduce someone or something to a lowly status, often in an arrogant or hurtful manner: "those who would mock and belittle others simply on the basis of their physical appearance" (Tyler Dilts).
Depreciate implies the assignment of a low estimation of value or worth, though the judgment it expresses is generally less disdainful than in the previous terms: "[19th-century American] literature was still mainly subservient to English models and depreciated as secondhand and second rate" (Chronology of American Literature).
| Noun | 1. | disparager - one who disparages or belittles the worth of something |