- inelastic collision
Origin of inefficacy
Examples from the Web for inefficacy
They have long left off using the waters, after having experienced their inefficacy.The Expedition of Humphry Clinker|Tobias Smollett
Gentlemen assign as a reason why the embargo should be removed, its inefficacy—that it has not answered the contemplated purpose.
Their inefficacy arises from the inutility of attempting to fix that which, like language, is essentially fluctuating.The English Language|Robert Gordon Latham
But on that night he felt the inefficacy of conventional antidotes to melancholy.The Trimmed Lamp|O. Henry
But he could even bring testimony to the inefficacy of such regulations.The History of the Rise, Progress and Accomplishment of the|Thomas Clarkson
"want of force or virtue to produce the desired effect," 1610s, from Late Latin inefficacia, from inefficacem (nominative inefficax), from in- "not, opposite of" (see in- (1)) + efficax (see efficacy).