Lacking intelligible meaning: a nonsensical jumble of words. (adjective)
Foolish; absurd: nonsensical ideas. (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 "nonsensical" in a sentence
"But since the fourth century B.C., the region has undergone such complete ethnic and cultural changes to render the name nonsensical, Greece argues - not to mention that Greece has its own province called Macedonia."
"The folks meeting there must have been ankle deep in nonsensical dribble."
"Of course, this means that usually they get away with it, and then spend 15 minutes in nonsensical Mad Hatter Tea Party discussion of a misformulation."