2
hefty(big, large, grand, huge, major)
2
humongous(adjective, huge, vast, massive)
2
illimited
2
immortal(constant, abundant, unrestrained, supreme, immense)
2
indulgent(adjective, unreasonable, extreme, extravagant, excessive)
2
inordinate(unreasonable, extreme, extravagant, excessive, unwarranted)
2
interminate(endless, infinite, incessant, ceaseless)
2
long(adjective, slow, big, boring, large)
2
long-drawn-out(adjective, slow, boring, tedious, late)
2
monstrous(huge, vast, immense, massive)
2
no end to(expression, adjective, limit, endless, immense)
2
overindulgent(adjective, gluttonous)
2
permanent(continuous, endless, infinite, everlasting, incessant)
2
steep(unreasonable, extreme, extravagant, excessive, unwarranted)
2
stiff(unreasonable, extreme, extravagant, excessive, unwarranted)
2
sumless
2
too much(expression, extreme, unwarranted, unnecessary)
2
unbridled
2
unchanging
2
unconscionable(unreasonable, extreme, extravagant, excessive, unwarranted)
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APASmart Define. (2015). boundless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/boundless/thesaurus/synonyms
ChicagoSmart Define. 2015. "boundless thesaurus" https://smartdefine.org/boundless/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, boundless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/boundless/thesaurus/synonyms>.
MLASmart Define. "boundless thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/boundless/thesaurus/synonyms>