sweat it out
idiomDefinition of sweat it out
informal
1
US
: to work hard at (something)
She was sweating it out on the treadmill.
2
: to feel worried or nervous about something
We'll let them sweat it out for a while longer before we give them the test results.
3
: to wait nervously until the end of something
It was a close game, and the fans were really sweating it out at the end.