I have informed you thusly. Merry Xmas.

Sheldon is a character on the hit TV show "The Big Bang Theory" and upon being proved right in a episode he exalted, "I have informed you thusly", instead of the usual, "I told you so" (buy the T-Shirt here). The word "thusly" protrudes from this exhalation like a sore thumb. Is thusly even a word?  Turns out, thusly is a word, just a superfluous one. Thusly stands out as one of those words that gets circled in your 100-level undergraduate essay with the marking,  "non-standard" or "colloquial".  If your teacher has marked your essay in this way because they believe thusly not to be a word, then they are perpetuating a semantic misconception.  Thusly is not the only example of this.  Funnest is perhaps the most funnest of the semantic misconceptions.  There are more, along with a a host of common English usage misconceptions found in this well constructed Wikipedia page.  The page even explains the misconception, "Xmas" is a secular plan to take the Christ out of Christmas.