adjective
- difficult to understand; obscure or complex
Usage: formal
Examples
- The professor’s abstruse theories confused most of the students.
- She found the mathematical concepts too abstruse to grasp quickly.
- The philosopher’s abstruse writings require careful study.
- His abstruse explanation left the audience bewildered.
- The legal document was filled with abstruse terminology.
- Even experts struggled with the abstruse technical manual.