45 entries under adverb topic. ×

15
furtively(noun, close, hideaway, arcane)
15
secretly(close, show, hideaway, arcane)
15
stealthily(noun, close, hideaway, arcane)
12
surreptitiously(noun, close, hideaway, arcane)
10
clandestinely(noun, show, quietly, secretly)
10
latently(close, hideaway, arcane, stealth)
10
privately(close, hideaway, arcane, stealth)
7
sub rosa(expression, show, quietly, secretly)
6
confidentially(quietly, secretly, personally, privately)
6
hiddenly
6
secretively(close, hideaway, arcane, stealth)
5
in secret(expression, idiom, quietly, secretly)
5
on the sly(noun, idiom, show, quietly)
5
underhandedly(noun, close, hideaway, arcane)
4
slyly(noun, secretly)
4
incognito(close, hideaway, arcane, stealth)
4
invisibly(invisibly, latently)
4
mysteriously
3
disguisedly
3
huggermugger(show, secretly)
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APASmart Define. (2015). covertly thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/covertly/thesaurus/synonyms
ChicagoSmart Define. 2015. "covertly thesaurus" https://smartdefine.org/covertly/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, covertly thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/covertly/thesaurus/synonyms>.
MLASmart Define. "covertly thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/covertly/thesaurus/synonyms>