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substantiate

C2
verb

Pronunciation

UK

  • /səbstˈænʃɪˌeɪt/

US

  • /səbˈstænʃiˌeɪt/
  • /səbˈstæntʃiˌeɪt/

Description

Imagine a detective trying to solve a mystery. They do not just believe someone committed the crime; they need facts. To substantiate a claim is like that detective gathering evidence to show it is true. If you tell your boss you deserve a raise, you should support that with clear examples of your work. It means backing up what you say with real proof. You would not just say something happened; you would give details, documents, or witness statements to support your story.

Examples

  1. 1

    Formal reports

    The report failed to substantiate the minister's claim that costs had fallen.

    • Usage

      common in formal English, especially in reports, law, and investigations

  2. 2

    Police investigation

    Detectives found no evidence to substantiate the witness's story.

  3. 3

    Environmental claims

    The company says it can substantiate its environmental claims with independent test results.

  4. 4

    School complaint

    After reviewing the emails, the school concluded that the student's complaint was substantiated.

    • Meaning

      was substantiated

      was shown to be true with enough evidence

  5. 5

    Online rumors

    Rumors spread quickly online, but very few of them were ever substantiated.

Forms and spellings

4 forms open this card.

Main spelling

  • substantiateverb

Forms

  • substantiatedpast tenseverb
  • substantiating-ing formverb
  • substantiatesverb