27 entries under complex topic. ×

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hard to solve(expression, hard, delicate, tricky)
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problematical(hard, delicate, tricky, complicated)
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subtle(hard, delicate, tricky, complicated)
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thorny(hard, delicate, tricky, complicated)
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ticklish(hard, delicate, tricky, complicated)
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troublesome(hard, delicate, tricky, complicated)
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vexing(hard, delicate, tricky, complicated)
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APASmart Define. (2015). inexplicable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inexplicable/thesaurus/synonyms
ChicagoSmart Define. 2015. "inexplicable thesaurus" https://smartdefine.org/inexplicable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, inexplicable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inexplicable/thesaurus/synonyms>.
MLASmart Define. "inexplicable thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/inexplicable/thesaurus/synonyms>