The antonyms for rejoinder are question and request. Some synonyms for rejoinder are rebuttal, retort, response, return, and comeback. The word rejoinder is a noun.

Example of correct rejoinder

When asked how old she was, the woman replied with the lame rejoinder "I am old enough".

Examples using a negative rejoinder include no, I do not. A rejoinder is an answer statement used to reply to a question or statement.

A rejoinder is a response to a statement or remark. A negative rejoinder would be something like "No.", "I don't think so.", or "Over my dead body!"