Sail adverbs are provided in this article. The words listed here are commonly found along with the verb sail in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb SAIL.
actually, certainly
directly, early
easily, immediately
probably, safely
slowly, smoothly
Hope this word list had the sail adverb you were looking for. In addition to adverbs used with sail, other example verb adverb pairings can be found on this site.
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