heir apparent

English Thesaurus

1. an heir whose right to an inheritance cannot be defeated if that person outlives the ancestor (noun.person)

hypernym	:	heir, heritor, inheritor,
definition	:	a person who is entitled by law or by the terms of a will to inherit the estate of another (noun.person)

antonym	:	heir presumptive,
definition	:	a person who expects to inherit but whose right can be defeated by the birth of a nearer relative (noun.person)

antonym	:	heir presumptive,
definition	:	a person who expects to inherit but whose right can be defeated by the birth of a nearer relative (noun.person)