50 entries under soft topic. ×

2
sleek(verb, adjective, quiet, clear, press)
2
stable(adjective, calm, quiet, direct, smooth)
2
tranquil(adjective, quiet, gentle, flat)
2
unvarying(adjective, quiet, smooth, right)
2
velvety(adjective, quiet, gentle, flat)
1
creamy(adjective, quiet, gentle, flat)
1
easy(adjective, quiet, gentle, flat)
1
effortless(adjective, quiet, gentle, flat)
1
equable(adjective, calm, quiet, smooth)
1
fluent(adjective, quiet, gentle, flat)
1
fluid(adjective, quiet, gentle, flat)
1
frictionless(adjective, quiet, gentle, flat)
1
hairless(adjective, quiet, gentle, flat)
1
invariable(adjective, quiet, smooth, right)
1
lustrous(adjective, quiet, gentle, flat)
1
mild(adjective, quiet, gentle, flat)
1
mirrorlike(adjective, quiet, gentle, flat)
1
quiet(verb, adjective, calm, gentle)
1
rhythmic(adjective, quiet, gentle, flat)
1
rippleless(adjective, quiet, gentle, flat)
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APASmart Define. (2015). plane thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/plane/thesaurus/synonyms
ChicagoSmart Define. 2015. "plane thesaurus" https://smartdefine.org/plane/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, plane thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/plane/thesaurus/synonyms>.
MLASmart Define. "plane thesaurus" 24 October 2015. Web. 22 September 2026. <https://smartdefine.org/plane/thesaurus/synonyms>