Prostrated adverbs are provided in this article. The words listed here are commonly found along with the verb prostrated in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb PROSTRATED.
completely, entirely
greatly, immediately
nearly, suddenly
utterly
Hope this word list had the prostrated adverb you were looking for. In addition to adverbs used with prostrated, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.