3
uneconomical(adjective, fancy, high, extravagant, lavish)
3
accomplished(good, great, excellent, best, first-rate)
3
admired(adjective, important, useful, expensive, scarce)
3
effective(useful, practical, beneficial, advantageous)
3
efficient
3
excessive(adjective, fancy, high, extravagant, lavish)
3
extreme(adjective, exceptional, valuable, expensive, scarce)
3
famous
3
fathomless(adjective, incalculable, immeasurable)
3
fine(adjective, good, great, excellent, superior)
3
good(great, excellent, sensible, useful, valuable)
3
great(adjective, good, excellent, best, first-rate)
3
immeasurable(adjective, incalculable)
3
immoderate(adjective, fancy, high, extravagant, lavish)
3
operative(useful, practical, effective, beneficial, advantageous)
3
piked(good, great, excellent, best, first-rate)
3
pleasing(adjective, excellent, honest, true, noble)
3
plush(adjective, fancy, high, extravagant, lavish)
3
stiff(adjective, fancy, high, expensive, exclusive)
3
worth its weight in gold(expression, adjective, idiom, rare, precious)
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APASmart Define. (2015). invaluable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/invaluable/thesaurus/synonyms
ChicagoSmart Define. 2015. "invaluable thesaurus" https://smartdefine.org/invaluable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, invaluable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/invaluable/thesaurus/synonyms>.
MLASmart Define. "invaluable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/invaluable/thesaurus/synonyms>