1
lasted(verb, endured)
1
late(adjective, dull, low, slow, boring)
1
lateness
1
lengthen
1
level
1
lightly
1
limitless(slow, boring, tedious, late, huge)
1
linger
1
live
1
livelong(adjective, durable)
1
lofty(adjective, great, deep, high, remote)
1
long-continuing
1
long-range
1
long drawn out(verb, expression, phrasal verb)
1
longsome
1
longue
1
loquacious
1
low(adjective, dull, moderate, stiff, late)
1
massive
1
mechanical
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APASmart Define. (2015). prolonged thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/prolonged/thesaurus/synonyms
ChicagoSmart Define. 2015. "prolonged thesaurus" https://smartdefine.org/prolonged/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, prolonged thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/prolonged/thesaurus/synonyms>.
MLASmart Define. "prolonged thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/prolonged/thesaurus/synonyms>