The deductive mood is an

epistemic Epistemology is the branch of philosophy that examines the nature, origin, and limits of knowledge. Also called "the theory of knowledge", it explores different types of knowledge, such as propositional knowledge about facts, practical knowledg ...

grammatical mood In linguistics, grammatical mood is a grammatical feature of verbs, used for signaling modality. That is, it is the use of verbal inflections that allow speakers to express their attitude toward what they are saying (for example, a statement ...

that indicates that the truth of the statement was deduced from other information, rather than being directly known. In English, deductive mood is often indicated by the word

must Must is freshly crushed Juice, fruit juice (usually grape juice) that contains the skins, seeds, and stems of the fruit. The solid portion of the must is called pomace and typically makes up 7–23% of the total weight of the must. Making must ...

, which is also used for many other purposes. By contrast, some other languages have special words or verb affixes to indicate deductive mood specifically. :An example in English: :I can smell gas in the house! Someone must have left the stove on! :(deductive indicated by must)

References

Grammatical moods {{Ling-morph-stub