Unusefulness
The Century Dictionary and Cyclopedia
noun.
The character of being unuseful.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
The quality of being
unuseful
.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the quality of having no practical use
Word Usage
"Reduction of quality, rework or unusefulness of the workpiece are the consequence."
Hypernym
Words that are more generic or abstract
quality
Hyponym
Words that are more specific
futility
impracticability
impracticableness
impracticality
worthlessness