Definition, Meaning & Synonyms
mustn't
contraction
/ˈmʌsnt/

Definition
Mustn’t is a contraction of ‘must not.’ It indicates a prohibition or something that is not allowed.

Examples
- You mustn’t smoke in here.
- She said I mustn’t tell anyone her secret.
- Guests mustn’t arrive after 10 PM.

Meaning
The word is used to express that something is forbidden or that one should not do something.

Synonyms
- must not
- cannot
- should not