go half and half | go halves (with somebody)idiomPart ofhalfgo half and half | go halves (with somebody)go half and half | go halves (with somebody) — idiomidiom1. To share the cost of something equally with another person.1.idiomDefinitionTo share the cost of something equally with another person.ExampleSara and Diego went halves on the dinner bill.Let's go half and half on the taxi fare.