conclusive proof

Translations
окончательное доказательство
The scientist presented conclusive proof of the theory.
Ученый представил окончательное доказательство теории.
Definitions
Conclusive proof refers to evidence that is so strong and definitive that it leaves no room for doubt or alternative explanations, effectively establishing a fact or conclusion beyond any reasonable question.
Words
conclusive

adjective
убедительное
proof

noun
доказательство