180 entries under adjective topic. ×

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indisposed(impaired, unfertile)
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infirm(impaired, unfertile)
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lifeless(dull, stiff, impassive, hollow)
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low-quality(unsatisfactory, unfulfilling)
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masklike(dull, stiff, impassive, hollow)
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moistureless
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mortifying(unsatisfactory, unfulfilling)
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needless
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noncommittal(dull, stiff, impassive, hollow)
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nonsensical
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not serious(expression, empty, worthless, frivolous)
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not up to par(expression, idiom, unsatisfactory, unfulfilling)
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not up to snuff(expression, idiom, unsatisfactory, unfulfilling)
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nullified(meaningless, invalid, unsubstantiated, unsupported)
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of no avail(expression, idiom, empty, worthless)
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poker-faced(dull, stiff, impassive, hollow)
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preposterous
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putrid(unsatisfactory, unfulfilling)
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quiet(unsatisfactory, unfulfilling)
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rambling(empty, worthless, frivolous, ineffective)
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APASmart Define. (2016). fruitless thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/fruitless/thesaurus/synonyms
ChicagoSmart Define. 2016. "fruitless thesaurus" https://smartdefine.org/fruitless/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, fruitless thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/fruitless/thesaurus/synonyms>.
MLASmart Define. "fruitless thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/fruitless/thesaurus/synonyms>