The quality of being inapt; inaptitude; unreadiness; awkwardness.(noun)
The Century Dictionary (Public Domain)
Use "inaptness" in a sentence
"Conceding the "inaptness" of my diction, one can't help but notice that Powers 'focus is how one says something rather than what is said, which is rather dangerous given that he positions himself in the nation's capital."
"I looked him straight in the eye and snapped "Get stuffed!" with perfect clarity and terrible inaptness."
"The difficulty with finding an apt replacemen for GWOT highlights the inaptness of the term."