Simple Definition of abstruse
: hard to understand
Full Definition of abstruse
: difficult to comprehend : recondite <the abstruse calculations of mathematicians>
Examples of abstruse in a sentence
Her subject matter is abstruse.
<you're not the only one who finds Einstein's theory of relativity abstruse>
Did You Know?
Look closely at the following Latin verbs, all of which are derived from the verb "trudere" ("to push"): "extrudere," "intrudere," "obtrudere," "protrudere." Each of these Latin verbs has an English descendant whose meaning involves pushing or thrusting. Another "trudere" offspring, abstrudere, meaning "to push away" or "to conceal," gave English abstrude, meaning "to thrust away." But that verb didn't make it past the 17th century. The "abstrudere" descendant that did survive is "abstruse," an adjective that recalls the meaning of its Latin parent abstrusus, meaning "concealed."
Origin and Etymology of abstruse
Latin abstrusus, from past participle of abstrudere to conceal, from abs-, ab- + trudere to push — more at threat
First Known Use: 1599
Seen and Heard
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