38 entries under adverb topic. ×

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closely
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confidentially
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covertly
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cryptically
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dirtily
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egoistically
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enigmatically
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internally
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mysteriously
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privily
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quietly
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secretively
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selfishly
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shabbily
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sneakily
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sneakingly
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strangely
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underhandedly(secretly, slyly, surreptitiously)
<12>
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APASmart Define. (2015). clandestine thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/clandestine/thesaurus/synonyms
ChicagoSmart Define. 2015. "clandestine thesaurus" https://smartdefine.org/clandestine/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, clandestine thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/clandestine/thesaurus/synonyms>.
MLASmart Define. "clandestine thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/clandestine/thesaurus/synonyms>