Presumed adverbs are provided in this article. The words listed here are commonly found along with the verb presumed in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb PRESUMED.
commonly, conclusively
fairly, generally
merely, naturally
reasonably, safely
simply, usually
widely
Hope this word list had the presumed adverb you were looking for. In addition to adverbs used with presumed, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.