7
mundane(adjective, dull, simple, tough, plain)
7
positively(adverb, strong, affirmation)
7
strapped(adjective, poor, low, informal, exhausted)
7
sure(adjective, strong, certain, definite, absolutely)
7
tabular(adjective, smooth, level)
7
thin(adjective, dull, weak, delicate, informal)
7
tired(adjective, dull, set, hard, silly)
7
unchanging(adjective, continuous)
7
unreserved(adjective, big, limited)
7
unseasoned(adjective, characteristic, dull, weak, boring)
6
bedsit(noun, place, house, apartment)
6
blank(adjective, dull, cool, detached, sober)
6
categoric
6
chambers(noun, set, group, accommodation, apartment)
6
clear(adjective, adverb, weak, smooth, gentle)
6
deflated(adjective, smooth, level)
6
den(noun, place, base, house, space)
6
distasteful(adjective, dull, weak, nasty, offensive)
6
dwelling(noun, place, base, house, home)
6
exact(adjective, calm, strong, smooth, plain)
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APASmart Define. (2016). flat thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/flat/thesaurus/synonyms
ChicagoSmart Define. 2016. "flat thesaurus" https://smartdefine.org/flat/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, flat thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/flat/thesaurus/synonyms>.
MLASmart Define. "flat thesaurus" 1 March 2016. Web. 20 September 2026. <https://smartdefine.org/flat/thesaurus/synonyms>