What Is Another Way to Say “By Chance”?

Looking for synonyms for by chance? We’ve got you covered!

Here’s a list of other ways to say by chance.

  • Accidentally
  • Coincidentally
  • Unexpectedly
  • Fortuitously
  • Randomly
  • Incidentally
  • Serendipitously
  • Unintentionally
  • Inadvertently
  • Spontaneously
  • Unplanned
  • Haphazardly
  • By accident
  • Arbitrarily
  • Unpredictably
  • Without planning
  • By fluke
  • Unforeseen
  • By happenstance
  • By a stroke of luck

Want to learn how to say by chance professionally? Keep reading for examples and use cases.

1. Accidentally

Used when something happens by mistake or without intention.
Example: “She accidentally discovered a major flaw in the software during routine testing.”

2. Coincidentally

Appropriate for situations where events happen at the same time by chance.
Example: “Coincidentally, two competing companies launched similar products on the same day.”

3. Unexpectedly

Used when something occurs without any prior indication or warning.
Example: “The CEO unexpectedly announced his retirement during the annual meeting.”

4. Fortuitously

Suitable for events that happen by fortunate chance.
Example: “The team fortuitously stumbled upon a solution while researching a different problem.”

5. Randomly

Used when actions or events occur without a definite plan or pattern.
Example: “The audit team randomly selected invoices for the monthly check.”

6. Incidentally

Appropriate for something occurring by chance in connection with something else.
Example: “Incidentally, the consultant we met at the conference had valuable insights on our project.”

7. Serendipitously

Used for making desirable discoveries by accident.
Example: “She serendipitously found a potential investor at a casual networking event.”

8. Unintentionally

Suitable when something happens without deliberate intent.
Example: “The marketing team unintentionally targeted the wrong audience with their campaign.”

9. Inadvertently

Used for something happening due to oversight or lack of attention.
Example: “He inadvertently omitted a crucial data set in the financial report.”

10. Spontaneously

Appropriate for actions or events occurring without premeditation.
Example: “The team spontaneously decided to pivot their strategy after the workshop.”

11. Unplanned

Used for events that were not arranged or prepared in advance.
Example: “The meeting was unplanned but proved extremely fruitful.”

12. Haphazardly

Suitable for actions or events lacking any obvious principle of organization.
Example: “The files were haphazardly stored, making retrieval difficult.”

13. By accident

Used for something happening without a deliberate plan or cause.
Example: “She discovered the accounting error by accident while reconciling the books.”

14. Arbitrarily

Appropriate for actions or decisions made at random or without reason.
Example: “The choice of vendor seemed to be made arbitrarily rather than based on merit.”

15. Unpredictably

Used for events that occur without forewarning or expectation.
Example: “Market trends can change unpredictably, impacting business strategies.”

16. Without planning

Suitable for situations arising spontaneously, without forethought.
Example: “The discussion started without planning but led to innovative ideas.”

17. By fluke

Used when something happens due to a stroke of luck or chance.
Example: “By fluke, the intern’s suggestion solved a problem that baffled experts for weeks.”

18. Unforeseen

Appropriate for events that were not anticipated or predicted.
Example: “Unforeseen technical difficulties caused a delay in the product launch.”

19. By happenstance

Used for things occurring by chance.
Example: “By happenstance, she met a key industry figure at a social event.”

20. By a stroke of luck

Suitable for events happening due to good luck.
Example: “By a stroke of luck, the company secured a last-minute investment to keep operating.”

Linda Brown