Directly opposite or completely contrary in nature, position, or meaning. Describes things that are fundamentally opposed to each other.
From Greek 'antithetikos' meaning 'of opposition,' from 'anti-' (against) + 'tithenai' (to place). Originally a rhetorical term for contrasting ideas placed side by side.
Think 'ANTI-THETICAL' - literally 'against the thesis'! If your thesis says one thing, the antithetical position says the exact opposite. It's like having a debate with yourself where both sides completely disagree.
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