73 entries under adjective topic. ×

18
indescribable(awful, foul, disgusting, vague)
13
unutterable(awful, foul, disgusting, unspeakable)
12
ineffable
11
inexpressible(awful, foul, disgusting, unspeakable)
10
unspeakable
8
undefinable
8
untellable
7
vague(subtle, elusive)
6
incommunicable(awful, foul, disgusting, unspeakable)
5
undefined
5
undescribable
4
elusive(mysterious, evasive)
4
indefinite
4
indeterminate
3
awful
3
beyond words(expression, awful, foul, disgusting)
3
defying description(expression, idiom, unspeakable, undescribable)
3
hazy
3
inexplicable
3
nameless
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APASmart Define. (2015). indefinable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/indefinable/thesaurus/synonyms
ChicagoSmart Define. 2015. "indefinable thesaurus" https://smartdefine.org/indefinable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, indefinable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/indefinable/thesaurus/synonyms>.
MLASmart Define. "indefinable thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/indefinable/thesaurus/synonyms>