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Synonyms

by coincidence

Idioms  
  1. Through an accidental simultaneous occurrence, as in By coincidence both researchers discovered the same solution. [Mid-1600s] Also see by chance.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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Not by coincidence, Evy discovers that she is herself pregnant, though she hasn’t told her boyfriend, with whom she was living before moving into her mother’s house for the latter’s final days.

From The Wall Street Journal Mar. 12, 2026

Traditionally, they vote once in every parliament on a republican motion to abolish the monarchy and the motion came up by coincidence on Tuesday.

From BBC Feb. 3, 2026

If it looks more like a Mazzone offense, that’s not by coincidence.

From Los Angeles Times Oct. 16, 2025

Days before I sat down for my conversation with John Lithgow, and purely by coincidence, I watched “The Adventures of Buckaroo Banzai Across the 8th Dimension” for the first time in decades.

From Salon Sep. 25, 2024

The evidence is circumstantial, but it’s hard to imagine that Sapiens, just by coincidence, arrived in Australia at the precise point that all these animals were dropping dead of the chills.

From "Sapiens: A Brief History of Humankind" by Yuval Noah Harari

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