General Synonyms:
* Draft
* Original
* Copy
* Text
* Document
* Composition
* Work
* Writing
More Specific Synonyms:
* Handwritten copy (for a text written by hand)
* Typescript (for a text typed on a typewriter)
* Autograph (for a manuscript written by the author's own hand)
* Scroll (for an ancient manuscript written on a long strip of material)
* Papyrus (for an ancient manuscript written on papyrus)
* Codex (for a manuscript bound in book form)
The best synonym to use will depend on the specific context of your writing.