So crude and unrefined as to be lacking in discrimination and sensibility.(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 "crass" in a sentence
"Many of the Reformers (by my reading of them) condemned the notion of real presence (and transubstantiation) because they interpreted it as a fleshy and physical presence (what you call crass and I might call immoderate realist)."
"That view is upheld by LA Times columnist Michael Hiltzik, who asks what he calls the crass question - "What is Apple Inc's plan if CEO Steve Jobs dies?""
"Liefeld engaging in crass commercialism and embracing gimmicks?"