Opposing adverbs are provided in this article. The words listed here are commonly found along with the verb opposing in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb OPPOSING.
actively, apparently, bitterly
constantly, diametrically, directly
merely, mutually, openly
publicly, seemingly, simply
strenuously, strongly, successfully
vigorously, violently
Hope this word list had the opposing adverb you were looking for. In addition to adverbs used with opposing, other example verb adverb pairings can be found on this site.
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