A person who conquers or defeats something together with another person; a joint conqueror.
From 'co-' (together) plus 'conqueror' (from Old French conquerrer, meaning to overcome or win). The term emerged in historical contexts to describe military or political achievements accomplished by multiple leaders.
Historical figures like the Norman brothers who invaded Sicily were coconquerors—they shared the glory and the work of conquest. It's a reminder that many famous victories involved multiple leaders rather than just one heroic individual.
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