53 entries under extensive topic. ×

29
expanded(verb, adjective, clear, free, spread)
20
prolonged(verb, adjective, strong, steady, regular)
20
enlarged(verb, adjective, vast, additional)
18
long(adjective, strong, big, high, large)
17
lengthened(verb, adjective, tedious, long, advanced)
16
protracted(verb, adjective, strong, big, high)
14
stretched(verb, adjective, stiff, vast)
13
broad(adjective, open, big, large, grand)
13
elongated(verb, adjective, tedious, long)
11
expansive(adjective, clear, free, space, large)
10
lengthy(adjective, strong, big, high, large)
10
widespread(adjective, open, big, space, large)
9
drawn out(verb, expression, adjective, phrasal verb, long)
7
elongate(verb, adjective, tedious, long)
7
spacious(adjective, clear, free, big, space)
7
wide(adjective, clear, free, big, large)
6
continued(verb, adjective, spread, steady, regular)
6
deep(adjective, open, full, large)
6
lasting(adjective, expanded, lingering, prolonged)
5
capacious(adjective, open, big, space, large)
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APASmart Define. (2016). extended thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/extended/thesaurus/synonyms
ChicagoSmart Define. 2016. "extended thesaurus" https://smartdefine.org/extended/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, extended thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/extended/thesaurus/synonyms>.
MLASmart Define. "extended thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/extended/thesaurus/synonyms>