The meaning of MUST is be commanded or requested to. How to use must in a sentence.

We usually use must to talk about obligations which come from the speaker and we generally use have (got) to when we refer to obligations that come from outside the speaker. …

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To be obliged or required by morality, law, or custom: Citizens must register in order to vote. 2. To be compelled, as by a physical necessity or requirement: Plants must have oxygen in order to …

Must is a modal verb. It is followed by the base form of a verb. You use must to indicate that you think it is very important or necessary for something to happen. You use must not or mustn't to …

Jan 1, 2026 · Have to is a more informal while Must is mostly used in written orders or instructions. Also, Must expresses obligation imposed by the speaker while Have to expresses …

(used to express that logically there is a need for the action or state of the next verb to be true): There must be some mistake (= there cannot be any other explanation possible). She must …

MUST definition: to be obliged or bound to by an imperative requirement. See examples of must used in a sentence.

Definition of must modal verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

• Don’t use ‘to’ after must. Don’t say: I must to get a new key. • You use must not when saying someone should not do something, for example because it is dangerous or wrong: You must …