Difficult to understand; profound and complex.
From the latin abstrusus ("hidden, obscure"), from abstrudere ("to hide awa.y")
- The abstruse theories of the philosopher left many of his students bewildered.
- The abstruse mathematics problem was only solved after many hours of intense study.
- The abstruse nature of the poem made it difficult for many readers to fully appreciate its meaning.
- The abstruse language of the legal document was hard for most people to comprehend.
- The abstruse concepts in the lecture were only understood by a few members of the audience.