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time-consuming
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APASmart Define. (1970). long-sustained thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/long-sustained/thesaurus/synonyms
ChicagoSmart Define. 1970. "long-sustained thesaurus" https://smartdefine.org/long-sustained/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 1970, long-sustained thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/long-sustained/thesaurus/synonyms>.
MLASmart Define. "long-sustained thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/long-sustained/thesaurus/synonyms>