Reproacher

Part of speech: noun

Definitions

1. A person who conveys dissatisfaction or blame towards another's actions or choices
2. An individual who articulates criticism or reproach regarding someone else's behaviors or decisions
3. A person who voices displeasure or finds fault with another's conduct

Etymology: "Reproacher" is a simple formation: the verb "reproach" with the agent suffix "-er" added, so it names whoever does the reproaching. The suffix is English, attached to a verb that came into the language earlier from Old French "reprochier," a word that was itself built from Latin roots meaning roughly "to bring close again" in the sense of pressing a charge back against someone. That makes the noun a plain piece of English word-building rather than a borrowing, and its meaning follows directly from the verb: a reproacher is one who finds fault with another person, or voices a complaint or rebuke. The word needs no special story, so its interest lies mostly in how transparently it is put together from parts that English already had.

Synonyms: critic, blamer

Antonyms: defender, supporter