Non-acceptances refer to the act of rejecting or declining something. The antonyms for this term would be "acceptances," which denotes an agreement or approval of something, and "endorsements," which signifies a recommendation or support for a particular thing. Other antonyms for non-acceptances can include "approvals," "admissions," "consents," and "sanctions." These words reflect the opposite meaning of non-acceptances and can be used interchangeably in various contexts. They are essential words to understand in everyday communication, whether for personal or professional purposes, and can help convey a clear and concise message to the audience.