1
taut
1
tense
1
tight
1
tiresome(adjective, slow, tedious, long, extended)
1
towering(adjective, strong, great, deep, extreme)
1
unbroken(steady, stable, regular, constant, unremitting)
1
unchanging
1
uneventful(dull, late, behind)
1
uninteresting(adjective, slow, tedious)
1
uninterrupted(steady, stable, regular, constant, unremitting)
1
unproductive(adjective, dull, moderate, low, stiff)
1
unprogressive(adjective, dull, moderate, low, stiff)
1
unremitting(adjective, constant, incessant, continued, sustained)
1
very long(expression, tedious, long, extended, protracted)
1
wearisome(adjective, slow, tedious, long, extended)
1
wide
1
widened
0
accept
0
adjournment
0
ageless
<1678910>
11 years ago|9.2k views|share |citing 
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>