Aha...gruntled

I was having this arguement the other day with someone about whether you can be gruntled or not. Or maybe it was just with myself. These days it's hard to tell. If you can be disgruntled, can you be gruntled? What's gruntling?

Anyhow, MostlyMuppet.Com had the following:

And are you gruntled yet? The “dis” of disgruntled is not the same as the “dis” of “dismayed.” It means “completely”, and so “gruntled,” just as it sounds, is an old word that means “grumbling.” Today, however, “gruntled” has found its way into dictionaries as a word in its own right. If you look at the origin, you will see that it gives “gruntled” as a back-formation from “disgruntled.” People assumed that “disgruntled” was a negative and invented the word “gruntled.” Similar back-formations add new words to the English dictionary every year. One of the most well-known as a back-formation is “edit, ” which arose because the word “editor” sounds as if it should mean “one who edits.”

Main Entry: grun·tle
Pronunciation: ‘gr&n-t&l
Function: transitive verb
Inflected Form(s): grun·tled; grun·tling /’gr&nt-li[ng], ‘gr&n-t&l-i[ng]/
Etymology: back-formation from disgruntle
: to put in a good humor