Encounter adverbs are provided in this article. The words listed here are commonly found along with the verb encounter in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb ENCOUNTER.
actually, certainly, commonly, constantly, continually
daily, directly, eventually, finally, frequently
generally, immediately, inevitably, invariably, likely
necessarily, normally, occasionally, probably, rarely
regularly, repeatedly, routinely, suddenly, surely
typically, undoubtedly, usually, willingly
Hope this word list had the encounter adverb you were looking for. In addition to adverbs used with encounter, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.