Final answer:
The antonym of recipient is donor, and the antonym of heir is predecessor.
Step-by-step explanation:
The antonym of recipient is donor. A recipient is someone who receives something, while a donor is someone who gives something. For example, if you receive a gift, you are the recipient, and the person who gave you the gift is the donor.
The antonym of heir is predecessor. An heir is someone who inherits something, typically property or a title, from a deceased person. A predecessor, on the other hand, is someone who held the position or ownership before the current person. For instance, if someone inherits a family business from their father, they are the heir, and their father is their predecessor.
The antonym for recipient is donor or giver, as the recipient is the one who receives, while the donor or giver is the one who provides or bestows something. Similarly, the antonym for heir is ancestor or benefactor, since the heir inherits from someone who has passed away, typically an ancestor or a benefactor who bequeaths assets or property.