0
disinterested
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dispassionate
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dog eat dog(expression, idiom)
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doublespeak
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dowdy
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draggy
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dreary
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emotionless
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eventless
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featureless
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feelingless
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feller
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going through motions(expression, idiom)
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going with the flow(expression, idiom)
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hard-as-nails
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hard-hearted
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hard as nails(expression, idiom)
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hardboiled
0
hardened
0
having a killer instinct(expression, idiom)
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APASmart Define. (2015). toneless thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/toneless/thesaurus/related
ChicagoSmart Define. 2015. "toneless thesaurus" https://smartdefine.org/toneless/thesaurus/related (accessed September 28, 2026).
HarvardSmart Define 2015, toneless thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/toneless/thesaurus/related>.
MLASmart Define. "toneless thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/toneless/thesaurus/related>