The lecture on quantum mechanics was so abstruse that most of the students were left confused.
关于量子力学的讲座如此深奥，以至于大多数学生都感到困惑。
Which of the following words is closest in meaning to “abstruse”?
D — complex. “abstruse” means adj. difficult to understand or comprehend
The professor's ______ lecture left even the brightest students confused.
C — abstruse. “abstruse” means adj. difficult to understand or comprehend
abstruse — adj. difficult to understand or comprehend. In Chinese: 难懂的，深奥的.
abstruse is pronounced /əbˈstruːs/. It breaks into 2 syllables: ab · struse.
The lecture on quantum mechanics was so abstruse that most of the students were left confused. (关于量子力学的讲座如此深奥，以至于大多数学生都感到困惑。)
obscure, complex, esoteric, recondite — all close in meaning to abstruse (adj. difficult to understand or comprehend).
Yes. abstruse appears on the iSEE Vocab Upper list, which covers 800+ words for the ISEE and SSAT.
ab(leave)+struse(meaning ''thrusting'')→not pushing it in front→difficult to understand