---
tag: EHGHN4HNPD
kind: concept
name: Subcontraries
sources:
  - wikipedia: en:76765067@r1368301704
    locator: Glossary of logic, section S
    note: adopted
    mention: wikipedia://en/76765067#JXEH
    sections: [Summary]
inventory: [ECET0RZYST]
---

## Summary

In traditional logic, a pair of particular statements (I and O propositions) that cannot both be false together, though both can be true under the square of opposition.