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 "unnoticeable" in a sentence
"Although statistically significant, the difference between the two groups was probably unnoticeable otherwise."
"And Mark was a little bit shorter than that, in a very small, unnoticeable way."
"Ms. Sylvestri had unwittingly driven into the floodwater of the Salem River, at a location where, at most times, it is an unnoticeable stream, fed by a series of small lakes in various towns of southern New Jersey."