I just learned that a word "Authoritative" exists. Up until now I have always used the word "Authorative", which I must have picked up along the way when I was browsing some technical documentation (I'm a software engineer).
I have looked up "Authorative" in Merriam Webster and on Wiktionary, and the word does not exist there. However, a general Google search for "Authorative" turns up quite a few references. Are all these people (including myself) really using a mis-spelled word, or is "Authorative" just a variant spelling?