noun
- a person who shares in a partnership with another; a joint partner
Usage: formal
Examples
- She became his copartner in the new law firm.
- The two inventors worked as copartners on the project.
- Each copartner contributed equal amounts to start the business.
- The copartners agreed to split the profits evenly.
- He sought a reliable copartner for his consulting venture.
- The copartners signed a formal agreement outlining their responsibilities.