56 entries under expression topic. ×

0
faulty grammar(idiom, solecism)
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hardness of heart(idiom, vice)
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icing on the cake(idiom, recklessness, licentiousness, wastefulness)
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ill fame(shame, ignominy, notoriety)
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ill repute(shame, ignominy, notoriety)
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illegal state(wrongfulness, unlawfulness)
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lapsus linguae(idiom, solecism)
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malum prohibitum(idiom, undueness)
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monkey business(conduct, disobedience, mischief, waywardness)
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naughty act(conduct, mischief, misconduct, naughtiness)
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putting foot in mouth(idiom, mistake, blunder)
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shore leave
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slip up(fault, mistake, lapse)
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unlawful act(wrongfulness, unlawfulness)
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want of ballast(idiom, vice)
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want of principle(idiom, vice)
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APASmart Define. (2015). impropriety thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/impropriety/thesaurus/synonyms
ChicagoSmart Define. 2015. "impropriety thesaurus" https://smartdefine.org/impropriety/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, impropriety thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/impropriety/thesaurus/synonyms>.
MLASmart Define. "impropriety thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/impropriety/thesaurus/synonyms>