seeing is believing
idiom
—used to say that when something unlikely is witnessed, the truth of its occurrence or existence can no longer be doubted
I didn't think it could happen, but seeing is believing.
Cite this Entry
“Seeing is believing.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seeing%20is%20believing. Accessed 3 Jul. 2025.
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