Meaning

noun a person who pleads for a cause or propounds an idea

noun a lawyer who pleads cases in court

verb push for something

originFrom Middle English advocat, advoket, from Old French advocat, from Latin advocātus (“an advocate”), from the substantivization of the perfect passive participle of advocāre (“to call for”) (see -ate (noun-forming suffix)), from a calque of Ancient Greek παράκλητος (paráklētos) (whence English paraclete). Doublet of advoke, avocat, avouch, and avow. The verb derives from the noun on the basis of…

Etymology from Wiktionary, CC BY-SA 3.0