Idioms and Phrases with none the wiser
none the wiser
Knowing no more than before, as in He tried to explain the tax structure, but in the end I was none the wiser. [Early 1800s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.