Synonyms|208Antonyms|72|Broader|0Narrower|0Related|175
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go-to(adjective, unreliable, insecure, treacherous, incalculable)
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hardboiled(unsound, unlikely)
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helpful
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hit
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in order(expression, useless)
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informative
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knockout
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matter of fact(expression, idiom, unlikely, impossible)
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nugget
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obtainable
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pearl
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potent
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procurable
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reachable
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real
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running
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smash
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solid
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sound
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stunner
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APASmart Define. (2016). unserviceable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unserviceable/thesaurus/antonyms
ChicagoSmart Define. 2016. "unserviceable thesaurus" https://smartdefine.org/unserviceable/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2016, unserviceable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unserviceable/thesaurus/antonyms>.
MLASmart Define. "unserviceable thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/unserviceable/thesaurus/antonyms>