75 entries under smooth topic. ×

1
on one plane(expression, adjective, idiom, calm)
1
planed(adjective, calm, flat, plain)
1
polished(adjective, calm, quiet, soft)
1
precise(adjective, calm, flat, plain)
1
proportionate(adjective, calm, flat, plain)
1
rolled(adjective, calm, flat, plain)
1
stabile(adjective, direct, right, flat)
1
straightforward(adjective, direct, right, solid)
1
through(adjective, right, solid, level)
1
trim(adjective, calm, flat, plain)
1
trimmed(adjective, calm, flat, plain)
1
unswerving(adjective, right, solid, level)
1
unwavering(adjective, direct, right, flat)
0
dead flat(expression, adjective, flat, even)
0
flat as a pancake(expression, adjective, idiom, flat)
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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>