Synonyms|110Antonyms|3|Broader|1Narrower|0Related|37

38 entries under adverb topic. ×

1
in holes and corners(expression, idiom, clandestine, quietly)
1
in secret(expression, idiom)
1
in strict confidence(expression, quietly, secretly, personally)
1
insidiously(quietly, secretly, personally, privately)
1
intimately(quietly, secretly, personally, privately)
1
obscurely(quietly, secretly, personally, privately)
1
privily(quietly, secretly, personally, privately)
1
under cover(expression, adjective, clandestine, recreant)
1
under the table(expression, fraudulent, recreant, quietly)
1
under wraps(expression, adjective, secret, clandestine)
1
undercover(adjective, secret, private, hidden)
1
underhandedly(noun, clandestine, quietly, secretly)
1
unobserved(quietly, secretly, personally, privately)
1
wildcat(clandestine, secretly, furtively, slyly)
0
huggermugger
0
mysteriously
0
sub sigillo
0
unrecognizably
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APASmart Define. (2015). on the sly thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/on_the_sly/thesaurus/synonyms
ChicagoSmart Define. 2015. "on the sly thesaurus" https://smartdefine.org/on_the_sly/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, on the sly thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/on_the_sly/thesaurus/synonyms>.
MLASmart Define. "on the sly thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/on_the_sly/thesaurus/synonyms>