Longest
Longest adverb - For the most time.
Both words in one sentence
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Long Runners: This was the longest-running Broadway musical for some time, beaten by Cats.
Source: Theatre / A Chorus Line -
Long Runner: Just barely beating out that other show as longest-running sci-fi series of all time.
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Webcomics Long Runner: By his own count, the 18th longest-running webcomic in existencenote Using strip count as a metric.
Source: Webcomic / Irregular Webcomic!
Cite this Source
Running and Longest. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/longest/running
Longest & Running. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/longest/running>.
Running or Longest. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/longest/running.
Google Ngram Viewer shows how "longest" and "running" have occurred on timeline