142 entries under additional topic. ×

4
else(adjective, adverb, new, different, addition)
4
likewise(adverb, new, spare, addition)
4
optional(adjective, spare, excess, further, surplus)
2
add-on(noun, adjective, increase, addition)
2
alternative(place, open, free, lower, spare)
2
and(new, addition, major, greater)
2
augmented(adjective, new, positive, major)
2
complementary(adjective, support, spare, auxiliary)
2
extended(adjective, new, major, greater)
2
farther(adjective, adverb, new, replacement)
2
fuss(adjective, informal, spare, excess, further)
2
gravy(noun, adjective, gain, spare, advantage)
2
ice(noun, adjective, informal, spare, advantage)
2
increased(adjective, new, positive, replacement)
2
mint(adjective, new, replacement, other)
2
original(adjective, new, replacement, other)
2
unimportant(adjective, place, lower, inferior, insignificant)
2
untouched(adjective, waste, new, excess, replacement)
1
appended(new, added)
1
button(adjective, spare, excess, further, alternative)
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APASmart Define. (2016). extra thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/extra/thesaurus/synonyms
ChicagoSmart Define. 2016. "extra thesaurus" https://smartdefine.org/extra/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, extra thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/extra/thesaurus/synonyms>.
MLASmart Define. "extra thesaurus" 30 March 2016. Web. 21 September 2026. <https://smartdefine.org/extra/thesaurus/synonyms>