Bedeutung von “must” im Essential American English Dictionary

must

verb us /mʌst/

A2 used to say that it is necessary that something happens or is done:

The meat must be cooked thoroughly.

B1 used to show that you think it is a good idea for someone to do something:

We must meet for lunch.

used to show that you are certain something is true:

You must be exhausted!
She must be very wealthy.

(Definition von “must” aus dem Webster's Essential Mini Dictionary © Cambridge University Press)