subcontrary
[ suhb-kon-trer-ee ]
/ sʌbˈkɒn trɛr i /
noun, plural sub·con·tra·ries. Logic.
one of two propositions that can both be true but cannot both be false.
Words nearby subcontrary
British Dictionary definitions for subcontrary
subcontrary
/ (sʌbˈkɒntrərɪ) logic /
adjective
(of a pair of propositions) related such that they cannot both be false at once, although they may be true together
Compare contrary (def. 5), contradictory (def. 3)
noun plural -ries
a statement that cannot be false when a given statement is false