Exhibiting short jumbled waves; choppy: lumpy seas; a lumpy channel. (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 "lumpy" in a sentence
"And as you know by following us, it has been and I'll use the word lumpy again quarter-over-quarter."
"So we continue to use the word lumpy for a lot of our results, but that's basically the nature of our business."
"So when I use the word lumpy, I mean it can be really lumpy."