subcontrarietyn.
/ˌsʌbkɒntrəˈrʌɪᵻti/, U.S. /ˈˌsəbˌkɑntrəˈraɪᵻdi/ Logic.
The relation between subcontrary propositions. See subcontrary adj. 2a. In quot. 1613 a use of the word ‘subcontrariety’.
ΘΚΠ
the mind > mental capacity > philosophy > logic > logical proposition > [noun] > opposite or contradictory proposition(s) > the opposition in
contrariety1553
subcontrariety1613
contradiction1794
contrary opposition1849
sublationa1856
contradictory opposition1887
1613 G. Wither Abuses Stript i. Occas. sig. B8v His Infinites, Indiuiduites, Contrari's, and Subcontrarieti's, Diuisions: Subdiuisions, and a crew Of tearmes and wordes such as I neuer knew.
1671 J. Newton Introd. Art Logick i. xix. 64 Propositions that are opposite by way of subcontrariety have one rule, namely this, that they may be both together true, but cannot be both together false; as these be true, Some man is learned, Some man is not learned.
1697 tr. F. Burgersdijck Monitio Logica i. xxxiii. 113 Subcontrariety is between two Particulars; Opposition Indefinite between two Infinites.
1792 Compend. Art Logick ii. vii. 52 Subcontrariety is an opposition between two particular propositions, as between I. and O.
1864 F. C. Bowen Treat. Logic vi. 162 It was convenient for Logicians to consider the relations of Subalternation and Sub-Contrariety.
1883 T. K. Abbott Elem. Logic iii. i. 33 Subcontrariety is not properly called opposition, since the subjects of the subcontraries are not the same; the ‘some’ of one not being identified with the ‘some’ of the other.
1957 Mind 66 338 In the case of material relations there is no way of making a distinction between subcontrariety and consistency.
2010 P. A. M. Seuren Lang. from Within II. v. 153 We shall be generous and assume that Aristotle did know about subcontrariety, even though he did not give it a name.
This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).
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n.1613