Arousing little or no interest or curiosity; boring.(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 "uninteresting" in a sentence
"“May you live in uninteresting times” as the Chinese blessing has it."
"An over-reliance on computer design software is weakening drawing skills among art students -- and resulting in uninteresting and uninspired work, according to college art professors."
"Staudinger, Ziegler, Natta, and Flory are insulators, they were viewed as uninteresting from the point of view of electronic materials."