129 entries under adverb topic. ×

12
virtually(near, really, much, roughly)
11
considerably
11
essentially(near, much, roughly, around)
9
materially
8
largely
8
significantly
7
in essence
7
in the main(expression, idiom, whole, intrinsicality)
7
well
6
at bottom(expression, idiom, intrinsicality)
6
basically
6
importantly(really, quite, particularly, generally)
6
much(near, pretty, absolutely, roughly)
6
practically(near, much, roughly, about)
5
actually
5
greatly
5
in effect(expression, idiom, near, much)
5
physically(solidly, materially)
4
extensively
4
firmly
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APASmart Define. (2015). substantially thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/substantially/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantially thesaurus" https://smartdefine.org/substantially/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, substantially thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/substantially/thesaurus/synonyms>.
MLASmart Define. "substantially thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/substantially/thesaurus/synonyms>