Noun:

नुकताचीन, अपवादक, बदनामी लगानेवाला, निन्दा करनेवाला, समीक्षक, आलोचक,

detractor's Usage Examples:

Terence justifies this practice by that of the older poets, Naevius, Plautus, Ennius, whose careless freedom he follows in preference to the "obscura diligentia" of his detractor.

The biggest detractor is not having something to will to your heirs.

The chief charge which his detractor brings against him is that of contaminatio, the combining in one play of scenes out of different Greek plays.

Detractor calimed that the comfy Crocs lacked style.

Etienne Dolet calls him "enemy of Cicero, and jealous detractor of the French name."

Synonyms:

traducer, libeler, depreciator, slanderer, cynic, vilifier, maligner, mudslinger, muckraker, defamer, disparager, knocker, backbiter, faultfinder, hatemonger,