Starts adverbs are provided in this article. The words listed here are commonly found along with the verb starts in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb STARTS.
abruptly, actually, automatically, directly, early
eventually, finally, frequently, generally, immediately
initially, instantly, naturally, normally, officially
probably, quickly, really, simply, slowly
suddenly, typically, usually, violently
Hope this word list had the starts adverb you were looking for. In addition to adverbs used with starts, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.