Not sophisticated. See Synonyms at naive.(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 "unsophisticated" in a sentence
"Thereby he toppled what was an established doctrine in unsophisticated textbooks, perhaps also a favorite idea of some industrial planners."
"These cuddly suburban folk are the very people - labelled unsophisticated but self-serving middle classes - that John Reid is here urging the new, future leader of the Labour Party which might it seems not be himself to keep on board."
"You could read too much into a picture, she told herself, recalling the unsophisticated snapshots of herself, mostly taken by her father, that littered the farmhouse."