The term "childbearer" refers to a person, usually a woman, who gives birth to a child. The antonyms of childbearer may include terms like "childless," "infertile," "barren," "sterile," or "unfruitful." These words imply that the person is unable to bear children due to various reasons like medical conditions or personal choices. In contrast, the term "parent" may be used as an antonym of "childbearer," as it refers to a person who has a child, regardless of whether or not they gave birth to the child. It is important to note that the use of these words may vary depending on the context, and it is essential to use them sensitively and appropriately.