56 entries under protracted topic. ×

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difficult(adjective, arduous)
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dilatory(slow, boring, tedious, late, rambling)
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dragged out(expression, long)
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ellipsoidal
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far off(expression, ovated)
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late(slow, boring, tedious, rambling)
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longwinded(dull, loose, ovated)
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ovaliform
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ovaloid
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ovated
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rectangular
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spread
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stretched out(expression, extended, lingering, prolonged)
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tardy(slow, boring, tedious, late, rambling)
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unfolded
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unfurled
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APASmart Define. (2016). lengthy thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/lengthy/thesaurus/synonyms
ChicagoSmart Define. 2016. "lengthy thesaurus" https://smartdefine.org/lengthy/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, lengthy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/lengthy/thesaurus/synonyms>.
MLASmart Define. "lengthy thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/lengthy/thesaurus/synonyms>