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”?
B — 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 804 words for the ISEE and SSAT.
ab(leave)+struse(meaning ''thrusting'')→not pushing it in front→difficult to understand