republic (n.) Look up republic at
c. 1600, "state in which supreme power rests in the people via elected representatives," from Middle French république (15c.), from Latin respublica (ablative republica) "the common weal, a commonwealth, state, republic," literally res publica "public interest, the state," from res "affair, matter, thing" + publica, fem. of publicus "public" (see public (adj.)). Republic of letters attested from 1702.