There are several synonyms for the term "ancillary attachment" which can be used to describe a range of supporting accessories or features. These can include related terms such as auxiliary, supplemental or secondary attachment, which all suggest a subordinate role in relation to a main item or piece of equipment. Additionally, synonyms such as complementary, supplementary or supporting attachment suggest a more cooperative or collaborative relationship, providing additional value or functionality to the primary object. Other common synonyms might include peripheral, additional or accessory attachment, which provide some secondary benefit or service to the main item, but are not necessarily integral or essential to its operation.