Legal heir refers to a person entitled to inherit the property and assets of a deceased individual. There are several synonyms for the term, including next of kin, beneficiary, heir-at-law, and rightful heir. Next of kin refers to the closest blood relatives of an individual, while beneficiary refers to a person who is designated to receive assets or property from a trust or insurance policy. Heir-at-law is a synonym used in reference to the legal right to inherit property or assets, while rightful heir refers to a person who has a fair and legitimate claim to property or assets left behind by a deceased individual.