1580s, from Middle French reconquerre (12c.), from re- "again, back" (see re-) + conquerre (see conquer). Related: Reconquered; reconquering.
c.1200, cunquearen, from Old French conquerre "conquer, defeat, vanquish," from Vulgar Latin *conquaerere (for Latin conquirere) "to search for, procure by effort, win," from Latin com-, intensive prefix (see com-), + quaerere "to seek, gain" (see query (v.)). Related: Conquered; conquering.