In order to modify an adjective or adverb, we use an adverb in English, as in "completely insane" or "It went completely out of hand". Now 'full', though mainly used as an adjective, occurs in English as adverb too, like for instance when you say: "I know full well." This makes the differentiation between "fully" and "full" not as intuitive as some may think.
I was wondering if I could get some thoughts on how the following sounds:
He advanced to battle, full angry.
He advanced to battle, fully angry.