Regret adverbs are provided in this article. The words listed here are commonly found along with the verb regret in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb REGRET.
bitterly, certainly, deeply, especially
exceedingly, extremely, greatly, hardly
heartily, immediately, keenly, particularly
probably, profoundly, really, scarcely
seriously, sincerely, sorely, sufficiently
truly
Hope this word list had the regret adverb you were looking for. In addition to adverbs used with regret, other example verb adverb pairings can be found on this site.
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