Fortified adverbs are provided in this article. The words listed here are commonly found along with the verb fortified in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb FORTIFIED.
carefully, completely, easily, formerly
greatly, hastily, heavily, highly
immediately, impregnably, naturally, newly
partially, poorly, properly, regularly
securely, slightly, strongly, sufficiently
thoroughly, usually
Hope this word list had the fortified adverb you were looking for. In addition to adverbs used with fortified, other example verb adverb pairings can be found on this site.
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