12
appendix(noun, part, increase, extra, addition)
12
postscript(noun, part, increase, extra, addition)
10
supplement(noun, act, part, increase, measure)
9
addition(noun, part, increase, extra, qualification)
8
addendum(noun, act, part, increase, measure)
8
rider(noun, act, part, increase, measure)
6
sequel(noun, increase, extra, addition, additive)
4
afterthought(noun, addition, supplement, sequel)
4
appendage(noun, increase, extra, addition, supplement)
4
clause(noun, act, measure, condition, qualification)
4
continuation(noun, increase, extra, addition, additive)
4
testament(noun, security)
4
will
3
adjunct(noun, act, increase, measure, extra)
3
annex(noun, increase, extra, addition)
3
coda(noun, sequel)
3
condition(noun, condition, limitation, requirement)
3
consequence(noun, sequel)
3
epilogue(noun, sequel)
3
follow-up(noun, sequel)
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APASmart Define. (2015). codicil thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/codicil/thesaurus/synonyms
ChicagoSmart Define. 2015. "codicil thesaurus" https://smartdefine.org/codicil/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, codicil thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/codicil/thesaurus/synonyms>.
MLASmart Define. "codicil thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/codicil/thesaurus/synonyms>