It is filled with complex and abstruse thoughts.
He has the exceptional talent of making the abstract and abstruse accessible.
Today students are overburdened with lengthy and abstruse syllabi.
He has abstruse style of writing.
He was confronted with an abstruse case of kidnapping.
Synonyms for Abstruse
deep , complex , complicated , hermetic , arcane , difficult , recondite , perplexing , esoteric , obscure