The sentence is: "After a while she got up from where she was and went over the little garden field entire."
A quote from Their Eyes Were Watching God by Zora Neale Hurston.
I want to know if the word "entire" is a flat adverb, a postpositive adjective, a noun alternative for entirety, or some other part of speech in the bolded sentence above.
Thank you for reading. I hope you will respond and share your thoughts with me.