The quality of having no useful result; uselessness.(noun)
Lack of importance or purpose; frivolousness.(noun)
A futile act.(noun)
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 "futility" in a sentence
"No the whole point of this little exercise in futility is to be able to point at this legislation and claim some credit for “protecting ppl from net nasties” with whichever special interest group the pollie or bureacrat is currently trying to curry favour with."
"This sense of futility is what makes the project we're sharing with you today so interesting."
"Some people think they can use drugs to fix these genetic defectives, but that's obviously an exercise in futility – you can't overcome something that's embedded in every cell in your body."