Pitch in.
[Slang] PITCH IN. - Master English Slang on Contributing to Team Efforts
To contribute to a group effort.
To "pitch in" means to join in and contribute to a group effort, whether it be throwing a party, handling a work assignment, or cleaning up. It carries a sense of community and teamwork. For instance, when someone says, “Let’s pitch in to clean up after the barbecue,” they’re inviting everyone to help with the clean-up process.
Example Sentences
Come on, everyone, pitch in and help clean up.
Everyone should contribute to help clean up.
If all of us pitch in, we'll finish the job much faster.
If everyone helps, the job will be finished much faster.
To make this charity event successful, we need as many people as possible to pitch in.
To make the charity event successful, we need as many people as possible to contribute.