Plural of contrary; things that are opposite to each other or contradict one another.
From Latin 'contrarius' (opposite), used in logic and philosophy to describe pairs of opposing concepts like 'hot' and 'cold' or 'good' and 'evil.'
In classical logic, 'contraries' are different from 'contradictories'—two contraries can both be false (like 'extremely hot' and 'extremely cold' when something is lukewarm), but contradictories cannot both be false.
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