Bench warmer singular noun informal
A player who sits on the bench for the most of the game while waiting to play.
If you don't want to be a bench warmer forever, you have to make more efforts.
My wife despises me because I am just a bench warmer.
James will become a bench warmer in case Tim is injured.
If someone is going through a purple patch, that means they have a very successful or lucky period, especially in sports.
To do one's best or try one's best to do something
A spectator at a sporting event boos at a specific competitor after something they didn't like happen.
A favor done in exchange for another favor.
1. Used when you accept something as an exchange in return for something especially as part of a compromise
2. Do something alternately
Plural nouns: bench warmers.
The phrase dates from the early 1900s.