abstruse

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The Word of the Day for April 6 is:

abstruse   \ub-STROOS\   adjective
     : difficult to comprehend : recondite

Example sentence:
     "This textbook is poorly written and unnecessarily 
abstruse," complained Marilyn.

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."