確証

プログレッシブ和英中辞典(第３版)の解説

かくしょう【確証】

((give; show)) conclusive evidence; positive proof; (a) confirmation ((of; that))

• 彼の有罪の確証を握る
  secure [obtain] conclusive evidence of his guilt
• 彼がそれをやったという確証はない
  There is no positive proof that he did it.
• 彼の理論が正しいという確証を得た
  The validity of his theory was confirmed.

出典｜小学館