75 entries under smooth topic. ×

41
constant(adjective, calm, sound, right)
31
uninterrupted(adjective, calm, quiet, direct, sound)
27
continual(adjective, direct, right, continue)
19
unbroken(verb, adjective, calm, quiet, direct)
15
steady(adjective, calm, quiet, complete)
13
consecutive(adjective, complete, solid, level)
12
regular(verb, adjective, calm, quiet, sound)
11
even(verb, adjective, adverb, calm, quiet)
11
level(adjective, quiet, direct, right)
10
consistent(adjective, calm, direct, right)
10
direct(adjective, right, flat, solid)
10
stable(adjective, calm, quiet, direct)
10
straight(adjective, calm, direct, right)
9
uniform(adjective, calm, quiet, right)
8
nonstop(adjective, continue, solid, level)
8
flat(adjective, calm, quiet, direct)
8
invariable(adjective, quiet, soft, gentle)
8
unvarying(adjective, quiet, right, soft)
7
solid(verb, adjective, sound, level)
7
running(verb, adjective, solid, short)
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APASmart Define. (2015). continuous thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/continuous/thesaurus/synonyms
ChicagoSmart Define. 2015. "continuous thesaurus" https://smartdefine.org/continuous/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, continuous thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/continuous/thesaurus/synonyms>.
MLASmart Define. "continuous thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/continuous/thesaurus/synonyms>