Definition

1. Adjective:
   • Serving to support or corroborate: Providing additional evidence or proof that makes something more certain or firmly established.
   • Relating to confirmation: Pertaining to the act of making something definite, valid, or binding.

Examples of Usage

• Adjective:
  • The new fingerprint analysis provided confirmatory evidence for the detective's theory.
  • A second, confirmatory test is required before the medical diagnosis is final.
  • The study's findings were confirmatory of earlier research in the field.

Advanced Usage

• In scientific/medical contexts: Often used to describe a secondary test or piece of evidence that verifies an initial finding.
  • The positive screening result must be followed by a confirmatory assay.
• In legal/formal contexts: Used to describe evidence or actions that substantiate a claim or agreement.
  • The witness's statement was confirmatory of the defendant's alibi.

Variants and Related Words

• Confirm (verb): To establish the truth, accuracy, or validity of something.
  • Please confirm your attendance by Friday.
• Confirmation (noun): The action of confirming something or the state of being confirmed.
  • We are awaiting written confirmation of the order.
• Confirmable (adjective): Capable of being confirmed or verified.

Synonyms

• Corroborative: Supporting or giving greater certainty to a statement or theory.
• Supportive: Providing support or backing.
• Validating: Serving to prove the validity or truth of something.
• Substantiating: Providing evidence to support or prove the truth of.

Related Phrases

• Confirmatory factor analysis: A statistical technique used in psychology and social sciences to test whether data fit a hypothesized measurement model.
  • The researcher used confirmatory factor analysis to validate the survey's structure.
• Confirmatory bias: (More commonly "confirmation bias") The tendency to interpret new evidence as confirmation of one's existing beliefs or theories. (Note: This is a related compound concept, not a direct usage of "confirmatory" alone).

Adjective

1. serving to support or corroborate
   • collateral evidence