Synonyms|5Antonyms|0|Broader|0Narrower|0Related|0
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complex
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dense(adjective, complicated)
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difficult
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involved
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obscure
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APASmart Define. (1970). heavy-going thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/heavy-going/thesaurus/synonyms
ChicagoSmart Define. 1970. "heavy-going thesaurus" https://smartdefine.org/heavy-going/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 1970, heavy-going thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/heavy-going/thesaurus/synonyms>.
MLASmart Define. "heavy-going thesaurus" 1 January 1970. Web. 21 September 2026. <https://smartdefine.org/heavy-going/thesaurus/synonyms>