4
stable(adjective, quiet, soft, gentle, flat)
4
stuffy(adjective, dull, flat, excite, heavy)
4
tasteless(adjective, dull, weak, flat, plain)
4
threadbare(adjective, dull, flat, stupid, dry)
4
undying(adjective, constant, abundant, continuous, unrestrained)
4
unimaginative(adjective, dull, simple, flat, plain)
4
weary(adjective, excite)
3
accustomed(adjective, regular)
3
bald(weariness, feebleness)
3
canonical(adjective, regular)
3
chiming
3
coherent(adjective, continuous)
3
cold(adjective, useful, fixed, feebleness, powered)
3
colourless
3
consecutive(adjective, continuous)
3
dusty(adjective, dull, simple, boring, tedious)
3
ennuyant
3
epochal(adjective, regular)
3
equal(adjective, equality, harmonized, standardized)
3
flavorless(adjective, dull, weak, plain, mild)
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APASmart Define. (2015). monotonous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/monotonous/thesaurus/synonyms
ChicagoSmart Define. 2015. "monotonous thesaurus" https://smartdefine.org/monotonous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, monotonous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/monotonous/thesaurus/synonyms>.
MLASmart Define. "monotonous thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/monotonous/thesaurus/synonyms>