3 entries under surreptitiously topic. ×

6
confidentially(adverb, quietly, secretly, personally, privately)
2
undercover(secretly, furtively, slyly, incognito)
1
personally(quietly, secretly, privately, slyly, confidentially)
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APASmart Define. (2015). covertly thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/covertly/thesaurus/synonyms
ChicagoSmart Define. 2015. "covertly thesaurus" https://smartdefine.org/covertly/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, covertly thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/covertly/thesaurus/synonyms>.
MLASmart Define. "covertly thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/covertly/thesaurus/synonyms>