Split adverbs are provided in this article. The words listed here are commonly found along with the verb split in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb SPLIT.
actually, badly, carefully, completely, deeply, easily
effectively, equally, essentially, evenly, eventually, finally
frequently, generally, hopelessly, horizontally, immediately, literally
longitudinally, nearly, partially, probably, quickly, randomly
readily, recently, roughly, simply, subsequently, suddenly
typically, ultimately, usually, vertically
Hope this word list had the split adverb you were looking for. In addition to adverbs used with split, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.