11
on the quiet(expression, life, reply, unseen, doings)
11
on the sly(expression, idiom, life, reply, unseen)
3
secretly(adverb, show, clandestine, slyly, underhandedly)
3
sub rosa(expression, adverb, show, clandestine, quietly)
2
privately(clandestine, quietly, secretly, personally, slyly)
1
clandestinely(adverb, show, clandestine, quietly, personally)
1
covert
1
covertly(adverb, show, quietly, secretly, personally)
1
furtively(clandestine, quietly, secretly, personally, privately)
1
hugger-mugger
1
huggermugger(adverb, show, secretly)
1
hush-hush(clandestine, quietly, secretly, personally, privately)
1
in camera(expression, clandestine, quietly, secretly, personally)
1
in confidence(expression, quietly, secretly, personally, privately)
1
in holes and corners(expression, idiom, clandestine, quietly, secretly)
1
in strict confidence(expression, idiom, quietly, secretly, personally)
1
insidiously(quietly, secretly, personally, privately, furtively)
1
intimately(quietly, secretly, personally, privately, furtively)
1
obscurely(quietly, secretly, personally, privately, furtively)
1
on the QT(expression, idiom, clandestine, quietly, secretly)
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APASmart Define. (2015). by stealth thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/by_stealth/thesaurus/synonyms
ChicagoSmart Define. 2015. "by stealth thesaurus" https://smartdefine.org/by_stealth/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, by stealth thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/by_stealth/thesaurus/synonyms>.
MLASmart Define. "by stealth thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/by_stealth/thesaurus/synonyms>