Request adverbs are provided in this article. The words listed here are commonly found along with the verb request in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb REQUEST.
earnestly, explicitly, expressly, formally
frequently, humbly, immediately, kindly
merely, particularly, politely, reasonably
respectfully, simply, specifically, typically
urgently, usually
Hope this word list had the request adverb you were looking for. In addition to adverbs used with request, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.