Restrain adverbs are provided in this article. The words listed here are commonly found along with the verb restrain in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb RESTRAIN.
barely, easily
effectually, hardly
physically, scarcely
Hope this word list had the restrain adverb you were looking for. In addition to adverbs used with restrain, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.