Abstruse

Part of speech: adjective

Pronunciation: /əbˈstɹuːs/

Definitions

1. Not easily understood due to its complex and obscure nature
2. Hard to grasp or comprehend because of complexity or obscurity
3. Challenging to understand, often because it is highly complex or technical

Etymology: The core fact here is that "abstruse" meant "concealed" before it meant "hard to understand." It comes from Latin "abstrusus," the past participle of "abstrudere," meaning "to conceal or thrust away." The Latin verb combines "abs-," from "ab-" meaning "away," with "trudere," "to push or thrust." So the original picture is of something pushed out of sight. The shift from hidden to difficult is a natural one: a truth tucked deep out of view is hard to reach, and a thought buried in dense reasoning is hard to grasp. The adjective was borrowed directly into English from Latin as a learned word, meaning English writers took it straight from the classical language rather than inheriting it through everyday speech. The same Latin root produced close relatives across Europe, including German "abstrus," Italian "astruso," and Spanish "abstruso," all carrying the sense of obscurity or difficulty.

Synonyms: esoteric, obscure, cryptic, enigmatic, recondite

Antonyms: clear, obvious, simple, straightforward, evident