8 entries under idiom topic. ×

7
on the sly(noun, expression, adverb, clandestine)
3
in secret(expression, adverb)
1
by stealth(expression, clandestine, quietly, secretly)
1
in holes and corners(expression, clandestine, quietly, secretly)
1
in strict confidence(expression, quietly, secretly, personally)
1
on the QT(expression, clandestine, quietly, secretly)
1
on the quiet(expression, clandestine, quietly, personally)
1
under the table(expression, quietly, secretly, personally)
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APASmart Define. (2015). furtively thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/furtively/thesaurus/synonyms
ChicagoSmart Define. 2015. "furtively thesaurus" https://smartdefine.org/furtively/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, furtively thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/furtively/thesaurus/synonyms>.
MLASmart Define. "furtively thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/furtively/thesaurus/synonyms>