Meaning

verb fill to satisfaction

verb overeat or eat immodestly; make a pig of oneself

adjective supplied (especially fed) to satisfaction

originFirst attested in the 1440–1450s, in Middle English; borrowed from Latin satiātus, perfect passive participle of satiō (“to fill full, satiate, satisfy”) (see -ate (verb-forming suffix) and -ate (adjective-forming suffix)), from satis (“sufficient”).

Etymology from Wiktionary, CC BY-SA 3.0