Synonyms|24Antonyms|0|Broader|0Narrower|0Related|0
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private detective
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private investigator
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sleuth-hound
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snooper
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APASmart Define. (2011). p.i. thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/p.i./thesaurus/synonyms
ChicagoSmart Define. 2011. "p.i. thesaurus" https://smartdefine.org/p.i./thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2011, p.i. thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/p.i./thesaurus/synonyms>.
MLASmart Define. "p.i. thesaurus" 29 May 2011. Web. 25 September 2026. <https://smartdefine.org/p.i./thesaurus/synonyms>