The list of Top 10 Misused Words is educational. Also check out 10 Common English Language Errors.
Copyright secured by Digiprove © 2011 James Ament Top 10 Misused Words
Copyright secured by Digiprove © 2011 James Ament Copyright secured by Digiprove © 2011 James Ament 
What happened to my old friends “problematic” and “actionable”? And how can one mention “ultimate” and resist throwing in a reference to Duane Thomas?
But are “problematic” and “actionable” misused or simply trite—like my least favorites from my previous corporate life: “deliverable” and incentivize?”
“Actionable” used to mean statements that one could sue over. “Problematic” used to mean open to question, verging maybe on “academic”. Now quite a few writers use “actionable” to mean information that could act on, and “problematic” to mean something that creates a difficulty.
Okay, I get it—the formal vs. the informal “misuse.”