heir

Someone who inherits, or is designated to inherit, the property of another.

• My brother is the heir to our childhood house and yet has no interest in it.

One who inherits, or has been designated to inherit, a hereditary title or office.

• As the heir to the British throne, the Prince of Wales is a very public figure.

A successor in a role, representing continuity with the predecessor.

• And I his heir in misery alone.
• India is run by gerontocrats and epigones: grey hairs and groomed heirs.

To inherit.ambitransitive

• […] Leonard Houtz & John Myer to be executors to this my last will & testament & lastly my children shall heir equally, one as much as the other.