126 entries under adjective topic. ×

3
glassy(quiet, soft, gentle, flat)
3
planar(smooth, even)
3
planate(calm, quiet, direct, smooth)
3
square(noun, direct, smooth, right)
3
steady(verb, calm, quiet, smooth)
3
trim(verb, calm, cut, smooth)
2
alike(calm, direct, smooth, right)
2
clear(verb, press, level, flush)
2
compressed
2
constant(calm, smooth, right, flat)
2
discoid
2
glossy(quiet, soft, gentle, flat)
2
matching(calm, direct, smooth, right)
2
monotonous(quiet, soft, gentle, flat)
2
parallel(calm, direct, smooth, right)
2
polished(calm, quiet, smooth, soft)
2
prostrate(verb, smooth, crush, low)
2
rolled(calm, smooth, flat, plain)
2
serene(quiet, soft, gentle, flat)
2
sleek(verb, quiet, clear, press)
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APASmart Define. (2015). plane thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/plane/thesaurus/synonyms
ChicagoSmart Define. 2015. "plane thesaurus" https://smartdefine.org/plane/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, plane thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/plane/thesaurus/synonyms>.
MLASmart Define. "plane thesaurus" 24 October 2015. Web. 24 September 2026. <https://smartdefine.org/plane/thesaurus/synonyms>