: having or showing an ability to notice and understand things clearly : mentally sharp or clever. 1  He is an astute observer of the current political scene. 2  Astute readers will notice the error. 3  She made some astute [=insightful] observations about the movie industry. 4  His analysis of the battle was very astute.
Define -ize: cause to be or conform to or resemble : cause to be formed into; subject to a (specified) action â -ize in a sentence cause to be or conform to or resemble : cause to be formed into; subject to a (specified) action; impregnate or treat or combine withâ¦
-ite. ( 1 sometimes pejorative) Used to form nouns denoting followers or adherents of a specified person, idea, doctrine, movement, etc. Adamsite, Campbellite, Jacobite, laborite, Mansonite, Reaganite, Thatcherite. 2  Used to form nouns denoting descendants of a specified historical person, especially a biblical figure.