72 entries under big topic. ×

34
lengthy(adjective, dull, time, strong, great)
20
extensive(adjective, time, great, deep)
18
extended(adjective, strong, high, large)
13
protracted(adjective, time, strong, great, excite)
10
great(adjective, time, deep, high)
7
large(adjective, great, heavy, high)
5
far-flung(adjective, deep, large, grand)
4
broad(adjective, large, grand, size)
4
far-reaching(adjective, time, great, deep)
4
good
4
lofty(adjective, time, great, deep)
3
boundless(adjective, slow, boring, large)
3
expanded(adjective, time, great, deep)
3
sizable(adjective, large, grand, size)
3
towering(adjective, time, strong, great)
3
voluminous(adjective, awkward, large, grand)
3
wide(adjective, large, grand, size)
2
colossal(adjective, great, heavy, awkward)
2
giant(adjective, great, large, huge)
2
gigantic(adjective, great, large, huge)
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APASmart Define. (2016). long thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/long/thesaurus/synonyms
ChicagoSmart Define. 2016. "long thesaurus" https://smartdefine.org/long/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, long thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/long/thesaurus/synonyms>.
MLASmart Define. "long thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/long/thesaurus/synonyms>