A person who walks or performs on a tightrope or rope; a tightrope walker.
From Latin funambulus plus the agent suffix -or (one who does the action). This created a noun for someone who practices funambulation. The term became established in English during the 17th-18th centuries when rope-walking became an organized performance art.
A funambulator is a tightrope walker, but there's also 'funambulist' which means the same thing—English sometimes has multiple words for the same thing because they came from different sources or were used in different contexts!
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