drops of salty liquid that come out through your skin when you are hot, frightened, ill, or doing exercise [= perspiration]:
liquid on skin[uncountable]
Ian came off the squash court dripping with sweat.
Beads of sweat appeared on his forehead.
Sweat poured down his face.
work up a sweat (=do physical exercise or hard work that makes you sweat)
Karen was on the exercise bikes, just beginning to break a sweat (=start sweating).
to become nervous or frightened about something:
Don't get into such a sweat about it! It's only a test.
to become very nervous or frightened:
Drops in stock market prices have investors breaking out into a sweat.
a state of nervousness or fear, in which you start to sweat, even though you are not hot
in/into a cold sweat
I woke up from the nightmare in a cold sweat.
used to say that you can do something easily:
'Are you sure you can do it on time?' 'Yeah, no sweat!'
6 [plural] American English informal
clothes made of thick, soft cotton, worn especially for sport [= sweatsuit]
trousers of this type [= sweat pants]
hard work, especially when it is boring or unpleasant
the hard effort that someone has made in their work