Synonyms|768Antonyms|230|Broader|9Narrower|0Related|1.3k

62 entries under demanding topic. ×

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testing(adjective, severe, difficult, violent, awkward)
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unsparing(adjective, tough, rough, difficult, heavy)
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APASmart Define. (2015). formidable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms
ChicagoSmart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, formidable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>.
MLASmart Define. "formidable thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms>