Hypothetical mood (abbreviated HYP) is an epistemic grammatical mood found in some languages (for example Lakota) which indicates that while a statement is not actually true, it could easily have been. For instance, in English, "You know you shouldn't play with knives! You could have hurt someone!" conveys a meaning that would be expressed with the hypothetical mood in Lakota.
- Loos, Eugene E.; Anderson, Susan; Day, Dwight H., Jr.; Jordan, Paul C.; Wingate, J. Douglas. "What is hypothetical mood?". Glossary of linguistic terms. SIL International. Retrieved 2009-12-28.