6
stupid(adjective, dull, slow, silly, ordinary)
6
torpid(insensibility, physical inertness)
6
uninterrupted(adjective, calm, quiet, direct, smooth)
6
unmitigated(adjective, complete, total, big, limited)
6
wearying(adjective, dull, boring, tedious, dreary)
5
bald(adjective, simplicity, weariness)
5
bank(noun, pitfall)
5
blind(adjective, dull, lackluster)
5
blunt(adjective, physical inertness)
5
bullpen(noun, place, house, home, box)
5
bunkhouse(noun, place, house, home, location)
5
calm(adjective, cool, weak, kind, smooth)
5
collapsed(adjective, smooth, level)
5
common(noun, adjective, calm, dull, set)
5
consistent(adjective, calm, strong, direct, smooth)
5
constant(adjective, calm, strong, smooth, right)
5
deadened(adjective, quiet, stifled, non-resonant)
5
definitely
5
diggings(noun, place, house, home, box)
5
dingy(adjective, dull, soft, obscure, dark)
10 years ago|55k views|share |citing 
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>