56 entries under immense topic. ×

5
untold(adjective, constant, absolute, monotonous, unrestrained)
4
bottomless(adjective, complete, deep, infinite)
4
enormous(adjective, absolute, huge, endless)
4
indeterminate(adjective, constant, abundant, unrestrained, endless)
2
constant(adjective, abundant, unrestrained, endless)
2
continual(adjective, constant, abundant, unrestrained, endless)
2
continuous(adjective, constant, abundant, unrestrained, endless)
2
extensive(adjective, huge, vast, endless)
2
never-ending(adjective, constant, absolute, endless)
2
no end of(expression, adjective, idiom, constant, monotonous)
2
no end to(expression, adjective, idiom, constant, monotonous)
2
undefined(adjective, infinite, boundless, unlimited)
2
wide-open(infinite, boundless, unlimited, unbounded)
1
amaranthine(adjective, constant, abundant, unrestrained, endless)
1
colossal(huge, vast, endless, infinite)
1
giant(huge, vast, massive)
1
gigantic(huge, vast, massive)
1
great(adjective, complete, big, huge, unrestrained)
1
huge(adjective, vast, endless, infinite)
1
mammoth(huge, vast, massive)
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APASmart Define. (2015). illimitable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/illimitable/thesaurus/synonyms
ChicagoSmart Define. 2015. "illimitable thesaurus" https://smartdefine.org/illimitable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, illimitable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/illimitable/thesaurus/synonyms>.
MLASmart Define. "illimitable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/illimitable/thesaurus/synonyms>