look up any word, like cleveland steamer:
 
1.
The lacking of knowledge on how to use correct grammar, punctuation, or any other tools of the English language.
Similar to how undignified would be to lack dignity, ungrammafied is simply to lack proper grammar.

See also: Ungrammarable
Keith is an OK guy but, he sure is ungrammafied.
by Ky-yah November 28, 2011