108 entries under irregular topic. ×

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fluctuant(unpredictable, unreliable)
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iffy(unpredictable, unreliable)
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incalculable(unpredictable, unreliable)
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inconstant(unpredictable, unreliable)
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intermittent(unpredictable, unreliable)
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meandering(unpredictable, unreliable)
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mercurial(unpredictable, unreliable)
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nomadic(unpredictable, unreliable)
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nonstandard
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off-center(extraordinary, unusual, wild, strange, crazy)
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off-color(strange, exceptional, nonstandard, uncharacteristic)
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out of line(expression, strange, exceptional, nonstandard)
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out of the ordinary(expression, unusual, strange, unexpected)
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planetary(unpredictable, unreliable)
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rambling(unpredictable, unreliable)
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roving(unpredictable, unreliable)
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shifting(unpredictable, unreliable)
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spasmodic(unpredictable, unreliable)
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uncertain(unpredictable, unreliable)
0
undirected(unpredictable, unreliable)
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APASmart Define. (2016). unnatural thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unnatural/thesaurus/synonyms
ChicagoSmart Define. 2016. "unnatural thesaurus" https://smartdefine.org/unnatural/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, unnatural thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unnatural/thesaurus/synonyms>.
MLASmart Define. "unnatural thesaurus" 30 March 2016. Web. 29 September 2026. <https://smartdefine.org/unnatural/thesaurus/synonyms>