12 entries under expression topic. ×

1
fallen from grace
0
committing perjury(fickle, untrustworthy, unprincipled, dirty-dealing)
0
dirty dealing(fickle, untrustworthy, unprincipled, dirty-dealing)
0
double dealing(fickle, untrustworthy, unprincipled, dirty-dealing)
0
fly by night(idiom, fickle, untrustworthy, unprincipled)
0
not true to(idiom, fickle, untrustworthy, unprincipled)
0
of bad faith(idiom, fickle, untrustworthy, unprincipled)
0
on the QT(idiom, fickle, untrustworthy, unprincipled)
0
on the quiet(idiom, fickle, untrustworthy, unprincipled)
0
snake in grass(idiom, fickle, untrustworthy, unprincipled)
0
stop at nothing(idiom, fickle, untrustworthy, unprincipled)
0
under cover(fickle, untrustworthy, unprincipled, dirty-dealing)
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APASmart Define. (2015). undutiful thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/undutiful/thesaurus/synonyms
ChicagoSmart Define. 2015. "undutiful thesaurus" https://smartdefine.org/undutiful/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, undutiful thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/undutiful/thesaurus/synonyms>.
MLASmart Define. "undutiful thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/undutiful/thesaurus/synonyms>