100 entries under smooth topic. ×

1
equate(verb, crush, smash, flatten)
1
equivalent(adjective, calm, flat, plain)
1
even off(verb, expression, phrasal verb, crush)
1
even out(verb, expression, phrasal verb, crush)
1
exact(adjective, calm, flat, plain)
1
grind
1
identical(adjective, calm, flat, plain)
1
in line(expression, adjective, calm, flat)
1
invariable(adjective, quiet, right, soft)
1
iron out(verb, expression, crush, level)
1
knock down(verb, expression, phrasal verb, crush)
1
level out(verb, expression, phrasal verb, crush)
1
leveled(adjective, calm, flat, plain)
1
like(adjective, calm, flat, plain)
1
lined up(expression, adjective, calm, flat)
1
make equal(verb, expression, crush, smash)
1
make even(verb, expression, crush, smash)
1
make flat(verb, expression, crush, smash)
1
matched(adjective, calm, flat, plain)
1
mow down(verb, expression, phrasal verb, crush)
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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>