persuade (v.)…1510s, from Middle French persuader (14c.), from Latin persuadere "to bring over by talking," (see persuasion). Related: Persuaded; persuading.persuadable (adj.)…"capable of being persuaded," 1737, from persuade + -able. Fowler recommends this over the older adjective, persuasible (late 14c.), from Latin persuasibilis "convincing, persuasive," from persuad-, past participle stem of persuadere (see persuade). This originally meant "having power to persuade," but c. 1500 it also acquired the meaning "capable of being persuaded" and the older sense became obsolete.persuasion (n.) …late 14c., "action of inducing (someone) to believe (something); argument to persuade, inducement," from Old French persuasion (14c.) and directly from Latin persuasionem (nominative persuasio) "a convincing, persuading," noun of action from past participle stem of persuadere "persuade, convince," from per- "thoroughly, strongly" (see per) + suadere "to urge, persuade," from PIE *swad- "sweet, pleasant" (see sweet (adj.)). Meaning "religious belief, creed" is from 1620s.