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must

[/mʌst/]
modal verb
dever, ter que
1. expressing necessity or obligation
You must finish your homework before going out.
Você deve terminar sua lição de casa antes de sair.
2. expressing strong probability or logical certainty
If he's not here by now, he must be stuck in traffic.
Se ele não chegou até agora, ele deve estar preso no trânsito.
3. expressing prohibition when negated
You must not enter without permission.
Você não deve entrar sem permissão.
Synonyms
have toneed toought toshould
Antonyms
maycanmightmust not

Regional Variations

General Brazilian Portuguese
dever, ter que
Most common usage for obligation
Portugal
dever, ter de
Portuguese prefers 'ter de' over 'ter que' in formal contexts

Related Idioms & Phrases

must have
must needs
a must-see
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