133 entries under flat topic. ×

1
slack(adjective, dull, quiet, slow)
1
sleek(adjective, quiet, soft, gentle)
1
soft(adjective, quiet, gentle, level)
1
soothing(adjective, quiet, soft, gentle)
1
stabile(adjective, calm, smooth, right)
1
stagnant(adjective, dull, quiet, slow)
1
torpid(adjective, dull, quiet, slow)
1
trimmed(adjective, calm, smooth, plain)
1
uneventful(adjective, quiet, soft, gentle)
1
unresponsive(adjective, dull, quiet, slow)
1
unwrinkled(adjective, direct, smooth, right)
1
unwrinkled flowing(expression, quiet, soft, gentle)
1
velvety(adjective, quiet, soft, gentle)
0
callous(adjective, dull, quiet, heavy)
0
dead flat(expression, adjective, smooth, even)
0
draggy(adjective, quiet, slow, uneventful)
0
empty(adjective, dull, quiet, smooth)
0
falling off(expression, adjective, quiet, slow)
0
flat as a pancake(expression, adjective, idiom, smooth)
0
glossy(adjective, quiet, soft, gentle)
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APASmart Define. (2016). regular thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/regular/thesaurus/synonyms
ChicagoSmart Define. 2016. "regular thesaurus" https://smartdefine.org/regular/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, regular thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/regular/thesaurus/synonyms>.
MLASmart Define. "regular thesaurus" 23 March 2016. Web. 21 September 2026. <https://smartdefine.org/regular/thesaurus/synonyms>