conclusive
adj.adj. proving that something is definitely true. You use this when there is no more doubt or need for more questions.
adj. 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.
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.
From French conclusif, from Late Latin conclusivus, from Latin conclūsīvē (“conclusively”), from past participle of concludere.
Often follows linking verbs like 'be' or 'seem', or modifies nouns like 'evidence', 'proof', and 'results'.