72 entries under expression topic. ×

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odd abnormal(unusual, strange, unexpected)
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off beat
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on a limb(idiom, insecure, risky, dangerous)
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on thin ice(idiom, doubtful, vague, changeable)
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out of all reason(idiom, silly, foolish, unwise)
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out of sorts(idiom, unstable, changeable, temperamental)
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out of the ordinary(idiom, unusual, strange, odd)
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roundabout unintended(ambiguous, rambling, incidental, circuitous)
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unheard of(odd, bizarre, outlandish)
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unpredictable wandering(adjective, irregular, unpredictable, unreliable)
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weird and wonderful(idiom, odd, bizarre, outlandish)
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without purpose
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APASmart Define. (2016). erratic thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/erratic/thesaurus/synonyms
ChicagoSmart Define. 2016. "erratic thesaurus" https://smartdefine.org/erratic/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, erratic thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/erratic/thesaurus/synonyms>.
MLASmart Define. "erratic thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/erratic/thesaurus/synonyms>