To distinguish or differentiate by contrasting with something else; to set apart through comparison of opposites.
From 'contra-' (against) + 'distinguish' (from Latin 'distinguere,' to separate). The verb form emphasizes the active process of creating distinction through opposition.
This verb appears in philosophical debates where thinkers need to show not just how A differs from B, but how A actively proves B wrong—it's more aggressive than simple 'distinguish.'
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