6
unmeasured
5
king-size(huge, vast, copious)
5
monumental(adjective, great, big, huge, vast)
5
stupendous(adjective, great, big, absolute, huge)
5
termless(adjective, infinite, infinity)
5
tremendous(adjective, big, large, huge, vast)
5
unending(adjective, constant, monotonous, vast, endless)
5
voluminous(adjective, great, big, huge, immense)
4
bulky(great, big, huge, vast, massive)
4
cosmic
4
everlasting(adjective, absolute, abundant, endless, infinite)
4
incomprehensible(complete, deep, absolute, unrestrained, indefinite)
4
indeterminate(adjective, constant, abundant, unrestrained, endless)
4
massive(adjective, great, big, huge, vast)
4
monstrous(adjective, huge, vast, immense, copious)
4
no end of(expression, adjective, idiom, constant, monotonous)
4
sizable(great, big, huge, loads, heaps)
4
unnumbered(adjective, infinity)
3
Brobdingnagian(adjective, huge, vast, massive)
3
abysmal
11 years ago|12k views|share |citing 
APASmart Define. (2015). immeasurable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/immeasurable/thesaurus/synonyms
ChicagoSmart Define. 2015. "immeasurable thesaurus" https://smartdefine.org/immeasurable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, immeasurable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/immeasurable/thesaurus/synonyms>.
MLASmart Define. "immeasurable thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/immeasurable/thesaurus/synonyms>