Active opposition or hostility between people, groups, or ideas. It represents a state of conflict where opposing forces work against each other, often involving mutual dislike or resistance.
From Greek 'antagonisma' meaning 'struggle against', composed of 'anti-' (against) and 'agon' (contest, struggle). The Greek 'agon' originally referred to athletic competitions, so antagonism literally meant competing against someone. The word entered English in the 17th century, broadening from physical contests to any form of opposition.
Antagonism is like friction in human relationships - sometimes it's destructive, but it can also be creative! Many of history's greatest advances came from productive antagonism, like the scientific method's built-in skepticism or democratic debate systems that harness opposition for progress.
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