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abstruse

adjective

1 abstruse

Difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge:
— The professor's lectures were so abstruse that students tended to avoid them.

synonyms: deep, recondite.

Roget 519: unintelligible, unaccountable, undecipherable, undiscoverable, unknowable, unfathomable; incognizable, inexplicable, inscrutable; inapprehensible, incomprehensible; insolvable, insoluble; impenetrable.    ... show more




Moby thesaurus: Herculean, abstract, arcane, arduous, beclouded, blind, brutal, buried, civilized, close, clouded, complex, complicated, concealed, covered, covert, critical, cultivated, cultured, deep ... show more.

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