must

US /mʌst/
UK /mʌst/
"must" picture
1.

used to express necessity or compulsion

:
•
You must finish your homework before you can play.
•
We must leave now or we'll miss the train.
:
have toought toshould
2.

used to express a strong probability or logical inference

:
•
She's been working all day, so she must be tired.
•
That must be the answer, it makes perfect sense.
:
surelycertainlyundoubtedly
1.

something that is necessary or essential

:
•
A good sense of humor is a must for this job.
•
Visiting the Eiffel Tower is a must when in Paris.
:
necessityessentialrequirementprerequisite
:
the show must go on