28 entries under extra topic. ×

12
appendix(noun, part, increase, addition)
12
postscript(noun, part, increase, addition)
10
supplement(noun, act, part, increase, measure)
9
addition(noun, part, increase, qualification)
8
addendum(noun, act, part, increase, measure)
8
rider(noun, act, part, increase, measure)
6
sequel(noun, increase, addition, additive)
4
appendage(noun, increase, addition, supplement)
4
continuation(noun, increase, addition, additive)
3
adjunct(noun, act, increase, measure)
3
annex(noun, increase, addition)
1
extension(noun, increase, addition, supplement)
1
insert(noun, increase, addition, additive)
0
add-on(noun, increase, addition, supplement)
0
added feature(noun, expression, increase, addition)
0
additive(noun, increase, addition)
0
bell(noun, increase, addition, additive)
0
bells and whistles(noun, expression, idiom, increase)
0
complement(noun, increase, addition, additive)
0
enhancement(noun, increase, addition)
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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>