The phrase "joint-heir" refers to someone who inherits something with another individual or group. Synonyms for this term may include "co-heir," "shared inheritor," "co-beneficiary," "shared receiver," and "joint recipient." These terms all imply a sense of collaboration and equality in the receipt of an inheritance. Additionally, other terms that may be used in conjunction with joint-heir include "partner," "associate," or "collaborator." Together, these terms suggest a mutual relationship in which two or more people benefit equally from the same inheritance. Overall, the synonyms for joint-heir convey a sense of shared responsibility and cooperation in the distribution of wealth or resources.