On
On adjective - Being in effective operation.
Tumble upon and on are semantically related. In some cases you can use "Tumble upon" instead a verb "On".
Tumble upon
Tumble upon verb - To come upon unexpectedly or by chance.
Usage example: while we were out on a drive in the country, we tumbled upon a farm stand selling the best peaches I've ever tasted
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Synonyms for Tumble upon
On and tumble upon are semantically related. Sometimes you can use "On" instead a verb phrase "Tumble upon".
Mutual synonyms
Cite this Source
Tumble upon and On. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/on/tumble_upon
On & Tumble upon. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/on/tumble_upon>.
Tumble upon or On. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/on/tumble_upon.
Google Ngram Viewer shows how "on" and "tumble upon" have occurred on timeline