61 entries under expression topic. ×

1
clammed up(mysterious, private, reticent, taciturn)
1
high and dry
1
in a corner
1
in a whisper
1
in camera(adverb, clandestine, secretly, underhandedly)
1
in chambers(mysterious, private, reticent, taciturn)
1
in holes and corners(idiom, adverb, sly, clandestine)
1
in privacy(mysterious, private, reticent, taciturn)
1
in private(idiom, mysterious, private, reticent)
1
in the clear
1
in the wings
1
nobody the wiser
1
on the quiet(idiom, adverb, dishonest, clandestine)
1
on the sly(idiom, adverb, secret, clandestine)
1
out of danger
1
under house arrest
1
under the breath
1
under the rose
1
with bated breath
0
advanced guard(idiom, warning)
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APASmart Define. (2015). undercover thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/undercover/thesaurus/synonyms
ChicagoSmart Define. 2015. "undercover thesaurus" https://smartdefine.org/undercover/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, undercover thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/undercover/thesaurus/synonyms>.
MLASmart Define. "undercover thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/undercover/thesaurus/synonyms>