1275-1325;Middle English < Anglo-French,Old Frencharguer < Latinargūtāre, -ārī, frequentative of arguere to prove, assert, accuse (Medieval Latin: argue, reason), though Latin frequentative form attested only in sense “babble, chatter”
1, 2. Argue, debate, discuss imply using reasons or proofs to support or refute an assertion, proposition, or principle. Argue implies presenting one's reasons: The scientists argued for a safer testing procedure; it may also imply disputing in an angry or excited way: His parents argue all the time. To discuss is to present varied opinions and views: to discuss ways and means. To debate is to interchange formal (usually opposing) arguments, especially on public questions: to debate a proposed amendment.
c.1300, from O.Fr. arguer (12c.), from L. argutare "to prattle" freq. of arguere "to make clear, demonstrate," from PIE *argu-yo-, from base *arg- "to shine, be white, bright, clear" (see argent). Related: Arguable; arguably. Colloquial argufy is first attested 1751.