1
personal
1
privacy
1
prowling
1
pussyfoot
1
pussyfooted
1
reserved(mysterious, private, reticent, taciturn, uncommunicative)
1
reticent(mysterious, private, taciturn, clandestine, underground)
1
roofed-in
1
screened
1
scummed
1
secluse
1
secrecy
1
secret police
1
sequestered
1
sheathed
1
shelled
1
shielded
1
silent(mysterious, private, reticent, taciturn, sneak)
1
sotto voce
1
stealing
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APASmart Define. (2015). undercover thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/undercover/thesaurus/synonyms
ChicagoSmart Define. 2015. "undercover thesaurus" https://smartdefine.org/undercover/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, undercover thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/undercover/thesaurus/synonyms>.
MLASmart Define. "undercover thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/undercover/thesaurus/synonyms>