134 entries under even topic. ×

5
monolithic(adjective, rigid, inflexible, consistent)
5
undiversified(adjective, constant, rigid, inflexible)
4
equal(adjective, smooth, right, like, straight)
4
habitual(adjective, dull, ordinary, usual, steady)
4
like(adjective, uniform, identical, harmonious)
4
orderly(adjective, ordinary, usual, normal)
4
straight(adjective, direct, smooth, right, level)
3
irreversible(adjective, fixed, rigid, inflexible)
3
normal(adjective, ordinary, usual, rigid)
3
of a piece(expression, adjective, idiom, steady, stable)
3
ordered(adjective, ordinary, usual, normal)
3
resolute(adjective, calm, strong, hard, solid)
3
smooth(adjective, right, flat, solid, level)
2
accordant(adjective, ordinary, usual, steady, routine)
2
balanced(adjective, calm, strong, secure, like)
2
coherent(adjective, uniform, continuous, harmonious)
2
dependable(adjective, certain, ordinary, usual, steady)
2
horizontal(adjective, quiet, smooth, soft, gentle)
2
incorrigible(adjective, rigid, inflexible, reliable)
2
plumb(adjective, smooth, right, solid, level)
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APASmart Define. (2015). invariable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/invariable/thesaurus/synonyms
ChicagoSmart Define. 2015. "invariable thesaurus" https://smartdefine.org/invariable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, invariable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/invariable/thesaurus/synonyms>.
MLASmart Define. "invariable thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/invariable/thesaurus/synonyms>