Click any word in a definition or example to find the entry for that word
You must be tired after your long trip.
There must be some mistake – no one named Shaw lives here.
I must have fallen asleep.
They must have gotten lost or they'd be here by now.
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.
I must introduce you to my brother.
"I'm just going to finish this off first." "Go ahead then, if you must."
Must you rush around without looking where you're going?
Why must life be so complicated?
I forgot their daughter's name. What must they think of me?
This is the American English definition of must. View British English definition of must.