# conclusive

/kənˈkɫusɪv/ (US) · /kənklˈuːsɪv/ (UK) · CEFR B2 · Adjective

Source: https://englishreference.com/word/conclusive
Updated: 2026-05-06

## Definition

proving that something is definitely true. You use this when there is no more doubt or need for more questions.

For teachers: serving to settle a dispute or question; providing a final and decisive result. Often used to describe evidence, proof, or the results of a study.

## Examples

- The DNA test provided conclusive proof of his identity.
- The researchers hope the new data will provide a conclusive answer to the mystery of the missing ship.
- While the initial findings were promising, the committee noted that the sample size was too small to reach a conclusive judgment on the drug's long-term safety.

## Usage notes

- Often follows linking verbs like 'be' or 'seem', or modifies nouns like 'evidence', 'proof', and 'results'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.