Conveying knowledge or information; enlightening.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "instructive" in a sentence
"Randall, is very anxious that the services should be what he calls instructive; that courses, for instance, of sermons should be preached on certain books of the Old Testament, on the Pauline"
""It Stinks!" is a way of encouraging readers to pay less attention, since even bad books can be bad in instructive ways."
"What I find most instructive is how New Media folks are critical of his new media stance but pro to his anti-government stance."