英语词源字典 - 在线词源网站

abstruse (adj.)[abstruse 词源字典]: 1590s, from Middle French abstrus (16c.) or directly from Latin abstrusus "hidden, concealed, secret," past participle of abstrudere "conceal," literally "to thrust away," from ab- "away" (see ab-) + trudere "to thrust, push" (see extrusion). Related: Abstrusely; abstruseness.[abstruse etymology, abstruse origin, 英语词源]