The words most commonly used as synonyms for "most scribbled" include "heavily annotated," "heavily marked," "crowded with notes," "dense with writing," or "scribbled all over." These synonyms all indicate that a piece of writing has numerous marks or notes added to it, often in a messy or scattered fashion. Other similar words include "jotted down," "scrawled," "doodled on," or "filled with sketches." These words suggest that the writing has been quickly added to and may not be organized or legible. Overall, there are many ways to describe writing that has been heavily marked or edited, depending on the degree of messiness or informality desired.