2
cultured(knowledgeable, educated, erudite, enlightened, scholarly)
2
delicate(hard, sharp, exact, tricky, complicated)
2
eclipsed(obscure, dark, secret, unknown, hidden)
2
educated(knowledgeable, cultured, erudite, enlightened, scholarly)
2
elusive
2
entangled(adjective, hard, fancy, obscure, difficult)
2
erudite(obscure, deep, thoughtful, precise, knowledgeable)
2
formidable(hard, intense, heavy, fierce, tricky)
2
hard(adjective, fancy, obscure, difficult, heavy)
2
hypothetical(intellectual, abstract, insubstantial, theoretical, imperceptible)
2
ideal(intellectual, abstract, theoretical, philosophical, nonconcrete)
2
indefinite(adjective, uncertain, doubtful, vague, intellectual)
2
inexplicable(adjective, hard, strange, deep, tricky)
2
labyrinthine(adjective, hard, fancy, obscure, difficult)
2
latent(obscure, dark, secret, unknown, hidden)
2
learned(obscure, deep, thoughtful, precise, knowledgeable)
2
lettered(knowledgeable, cultured, educated, erudite, enlightened)
2
literate(knowledgeable, cultured, educated, erudite, enlightened)
2
muddy(adjective, obscure, difficult, uncertain, vague)
2
nice(hard, sharp, exact, tricky, complicated)
11 years ago|17k views|share |citing 
APASmart Define. (2015). abstruse thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/abstruse/thesaurus/synonyms
ChicagoSmart Define. 2015. "abstruse thesaurus" https://smartdefine.org/abstruse/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, abstruse thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/abstruse/thesaurus/synonyms>.
MLASmart Define. "abstruse thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/abstruse/thesaurus/synonyms>