157 entries under adjective topic. ×

3
convoluted(hard, fancy, obscure, difficult)
3
equivocal(obscure, difficult, dark, strange)
3
indistinct(uncertain, vague, unclear, unintelligibility)
3
obscured(hidden, indefinite, unreal, insubstantial)
3
shadowy(obscure, dark, unknown, hidden)
3
unclear(hard, obscure, difficult, loose)
2
arduous(hard, fancy, difficult, complex)
2
cabbalistic
2
challenging(obscure, difficult, inaccessible)
2
entangled(hard, fancy, obscure, difficult)
2
hard(fancy, obscure, difficult, heavy)
2
indefinite(uncertain, doubtful, vague, intellectual)
2
inexplicable(hard, strange, deep, tricky)
2
labyrinthine(hard, fancy, obscure, difficult)
2
muddy(obscure, difficult, uncertain, vague)
2
private(obscure, secret, unknown, hidden)
2
problematic(hard, fancy, difficult, complex)
2
rich
2
strong
2
tangled(hard, obscure, difficult, complex)
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APASmart Define. (2015). abstruse thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/abstruse/thesaurus/synonyms
ChicagoSmart Define. 2015. "abstruse thesaurus" https://smartdefine.org/abstruse/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, abstruse thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/abstruse/thesaurus/synonyms>.
MLASmart Define. "abstruse thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/abstruse/thesaurus/synonyms>