: the relation existing between subcontrary propositions in logic : the relation of two propositions with identical terms which is such that both may be true but both cannot be false — see opposition sense 2a(2)
What is sub Contrariety?
tions are contraries if they cannot both be true. For comparison, the. definition of contradiction states that two propositions are contradictories. if they can neither both be true nor both be false, and that of sub- contrariety, that they cannot both be false.
What does Subcontrary mean in logic?
(sʌbˈkɒntrərɪ) logic. adj. (Logic) (of a pair of propositions) related such that they cannot both be false at once, although they may be true together. Compare contrary5, contradictory3.
