1
ingrained(adjective, persistent, continuous, lasting, continuing)
1
inhaled
1
intense(adjective, strong, severe, passionate, powerful)
1
interminate(endless, infinite, boundless, incessant, long-winded)
1
inveterate(adjective, persistent, continuous, lasting, continuing)
1
languishing
1
lanky(adjective, great, deep, high, remote)
1
large(big, grand, huge, inclusive, sweeping)
1
large-scale(big, large, grand, huge, major)
1
late(adjective, dull, low, slow, boring)
1
lengthen
1
lengthwise
1
limitless(slow, boring, tedious, late, endless)
1
lofty(adjective, great, deep, high, remote)
1
long-continuing
1
long-lived(adjective, persistent, continuous, lasting, continuing)
1
long-spun
1
long-standing(adjective, persistent, continuous, lasting, continuing)
1
longiloquent
1
loquacious
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APASmart Define. (2015). protracted thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/protracted/thesaurus/synonyms
ChicagoSmart Define. 2015. "protracted thesaurus" https://smartdefine.org/protracted/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, protracted thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/protracted/thesaurus/synonyms>.
MLASmart Define. "protracted thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/protracted/thesaurus/synonyms>