1
tops(adjective, great, top, glory, upper)
1
treasured(adjective, important, useful, rare, expensive)
1
troublesome
1
unaffordable(adjective, expensive, high-priced, pricey, pricely)
1
unapproachable(adjective, expensive, high-priced, pricey, pricely)
1
unattainable(adjective, expensive, high-priced, pricey, pricely)
1
unavailable(adjective, expensive, high-priced, pricey, pricely)
1
unobtainable(adjective, expensive, high-priced, pricey, pricely)
1
unpayable
1
unprofitable
1
usurious(adjective, expensive, high-priced, pricey, pricely)
1
valued(adjective, important, useful, rare, expensive)
1
vast(adjective, expensive, high-priced, pricey, pricely)
1
with money(expression, idiom)
1
without price(expression, adjective, rare, precious, invaluable)
1
worth its weight in gold(expression, adjective, idiom, rare, precious)
1
worthwhile(adjective, important, useful, expensive, scarce)
0
Pyrrhic
0
abnormal(adjective, extraordinary, extreme, prohibitive)
0
abounding(adjective, smart, full, elegant, valuable)
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APASmart Define. (2015). costly thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/costly/thesaurus/synonyms
ChicagoSmart Define. 2015. "costly thesaurus" https://smartdefine.org/costly/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, costly thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/costly/thesaurus/synonyms>.
MLASmart Define. "costly thesaurus" 24 December 2015. Web. 23 September 2026. <https://smartdefine.org/costly/thesaurus/synonyms>