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root cause is not in our dictionary (yet). Here's what it could mean:

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Results generated using artificial intelligence.

noun

  • The fundamental reason for the occurrence of a problem or event, which, if removed, would prevent the issue from recurring.

Example Sentences

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

"It's too early to know the root cause but we're already working to find it," Bezos wrote on X.

From Barron's • May 29, 2026

I know that real problem-solving starts with diagnosing the root cause.

From BBC • May 29, 2026

Thesaurus

Possible Synonyms

Words in our thesaurus

other words

  • underlying reason
  • the real culprit
  • primary source
  • patient zero
  • the heart of the matter

Possible Antonyms

Words in our thesaurus

other words

  • surface issue
  • temporary fix
  • band-aid solution

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