Half adverbs are provided in this article. The words listed here are commonly found along with the verb half in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb HALF.
angrily, barely
jokingly, playfully
probably, reluctantly
seriously, unconsciously
Hope this word list had the half adverb you were looking for. In addition to adverbs used with half, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.