- Definitions|2
- Thesaurus|533
- Abbreviations|0
| rare(adjective, precious, priceless, invaluable, irreplaceable) | |
| relevant(adjective, important, useful, expensive, scarce) | |
| respected(adjective, important, useful, expensive, scarce) | |
| serviceable(adjective, important, useful, expensive, scarce) | |
| substantial | |
| treasured(adjective, important, useful, rare, expensive) | |
| umpteen | |
| umteen | |
| unavoidable | |
| unbounded | |
| unevadable | |
| unnumbered | |
| unspecified | |
| valued(adjective, important, useful, rare, expensive) | |
| without price(expression, adjective, rare, precious, invaluable) | |
| worth its weight in gold(expression, adjective, idiom, rare, precious) | |
| worthwhile(adjective, important, useful, expensive, scarce) | |
| absolute | |
| alembicated | |
| animals |
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| APA | Smart Define. (2015). inestimable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inestimable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "inestimable thesaurus" https://smartdefine.org/inestimable/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, inestimable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inestimable/thesaurus/synonyms>. |
| MLA | Smart Define. "inestimable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/inestimable/thesaurus/synonyms> |