ett måste

Definition & meaning

Måste means must, have to, or need to. It expresses necessity or obligation:

• Jag måste gå. — I have to go.

It can also express a strong conclusion:

• Hon måste vara trött. — She must be tired.

Grammar & Word origin

Måste is a modal auxiliary verb, usually followed by another verb in the infinitive without att. It has the same form in the present and past; context indicates the time.

The verb is related to older Swedish forms meaning “to be allowed or able to,” as well as to English “must.”

Synonyms & antonyms

• behöver ↗ — “needs to”; often suggests practical necessity rather than a strict obligation.
• ska ↗ — “shall” or “is supposed to”; can express an obligation or plan, but is not always as strong as måste.
• får ↗ — “may” or “is allowed to”; expresses permission rather than necessity, rather than being a direct antonym.

Common phrases & collocations

• måste gå ↗ — must go
• måste vara ↗ — must be
• måste ha ↗ — must have
• måste inte ↗ — does not have to; it expresses a lack of obligation, not a prohibition.