Not sure whether it is appropriate to use a specific word in your blog. This plugin from BeeDictionary.com identifies difficult and confusing words an
Quick Dictionary Meaning from BeeDictionary.com creates a small temporary popup for difficult and confusing words. A reader can check the meaning without opening a dictonary or going to other sites.
It has a database of more than 3000 difficult and commonly confused errors. It identifies those words and create a small popup on hovering these words.