В-90

ВЕЩЬ В СЕБЕ lit NP usu. subj-compl with copula ( subj: abstr , concr, or-by extension-human) fixed WO

(of phenomena which are) unfathomable to the human mind

by extension (of a person whose personality, mindset etc is) enigmatic, difficult to understand

thing-in-itself (things-in-themselves)

closed book.

Loan translation of the German Ding an sich (from Im-manuel Kant's Critique of Pure Reason, 1781).