Synonyms for "Appendix": Anatomical and Literary Alternatives

Depending on context—anatomical or document structure—synonyms for appendix include:

Anatomical (Vermiform Appendix)

• Vermiform appendix (formal)
• Cecal appendix
• Vermix (archaic)

Document / Book Supplement

• Addendum
• Annex
• Supplement
• Postscript
• Codicil (legal/wills)
• Appendix (same word, plural appendixes or appendices)

Note: “Appendix” appears in both lists; the intended meaning is clarified by context.