40 entries under adjective topic. ×

3
expensive(price, expenses, costliness)
3
ineffective(expenses, cheapness, costliness)
3
ineffectual(expenses, cheapness, costliness)
3
pricey(price, expenses, costliness)
3
uneconomical(price, expenses, costliness)
3
unproductive(expenses, cheapness, costliness)
3
worthless(price, expenses, costliness)
2
thriveless(cost, expenses, unprofitable, nonprofit)
2
unbeneficial(cost, expenses, unprofitable, nonprofit)
2
unfavorable(cost, expenses, unprofitable, nonprofit)
2
unfavourable(cost, expenses, unprofitable, nonprofit)
2
unremunerative(cost, expenses, unprofitable, nonprofit)
2
valueless(expenses, cheapness, costliness)
1
counterproductive(expenses, cheapness, costliness)
1
insignificant(expenses, cheapness, costliness)
1
thriftless(finance, expenses, costliness)
1
unavailing(expenses, cheapness, costliness)
1
unreasonable(finance, expenses, costliness)
1
unthrifty(finance, expenses, costliness)
1
waste(expenses, cheapness, costliness)
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APASmart Define. (2011). cost effective thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/cost_effective/thesaurus/antonyms
ChicagoSmart Define. 2011. "cost effective thesaurus" https://smartdefine.org/cost_effective/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2011, cost effective thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/cost_effective/thesaurus/antonyms>.
MLASmart Define. "cost effective thesaurus" 23 May 2011. Web. 28 September 2026. <https://smartdefine.org/cost_effective/thesaurus/antonyms>