Effectiveness
The Century Dictionary and Cyclopedia
noun.
The quality of being effective.
the GNU version of the Collaborative International Dictionary of English
noun.
The quality of being effective.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
The property of being
effective
noun.
The ability to be
effective
.
noun.
The degree to which something is
effective
.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
power to be effective; the quality of being able to bring about an effect
noun.
capacity to produce strong physiological or chemical effects