conclusive
The DNA test provided conclusive evidence of his innocence.
The DNA test gave final, undeniable proof that he was not guilty.
Serving to prove something definitely; leaving no doubt.
The jury found the witness's testimony conclusive.
The jury considered the witness's statement as final proof.
Often used in legal or scientific contexts to describe evidence that ends a debate or investigation.
Ending a matter or discussion by providing a final answer.
Scientists are still looking for conclusive data on the climate model.
Researchers need final, indisputable data to confirm the climate model.
Implies that no further argument or investigation is necessary.
Collocations
Pro Tip
Usage Tip
Use 'conclusive' when you want to emphasize that a matter is settled. Avoid using it for opinions or feelings, as it implies objective proof.
Gold Rule
Formality Check
This is a formal word. Do not use it in casual conversation (e.g., say 'sure proof' or 'final answer' instead of 'conclusive proof' in casual chat).
Word Origin
From Latin 'conclusivus', from 'concludere' meaning 'to shut in' or 'to end'.
Usage Notes
Use this word when something ends a discussion or proves a point completely. It is stronger than 'strong' or 'good' evidence. It is often used in formal writing, news reports, and legal documents.