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You must be tired after your long journey.
There must be some mistake – no one called Shaw lives here.
They must have got lost or they’d be here by now.
I must have fallen asleep.
Tomato plants must be watered regularly.
People must realize that there are limits to what we can do.
I’ve told you the truth. Must I keep repeating it?
We mustn’t be late.
You must come and visit us again some time.
You must see the Monet exhibition – it’s really wonderful.
‘I’m just going to finish this off first.’ ‘Go on then, if you must.’
Must you rush around without looking where you’re going?
Why must life be so damn complicated?
I forgot their daughter’s name. What must they think of me?
This is the British English definition of must. View American English definition of must.