attest

証言する、証明する

自分が知っていることなどを根拠に、事実や本物であると述べる。

やさしい英語で： To say that something is true or genuine, often because you have personal knowledge of it.

• I can attest that she was there.
• Several former clients attested to his honesty.
• Can anyone attest to the truth of this statement?

使い方： attest to something (I can attest to the accuracy of her account.); attest that… (Two witnesses attest that he was at home that evening.)

類義語： confirm, affirm, verify

反対語： deny

よく使う表現： attest to something, attest that something, attest the truth

証明する、示す

証拠によって、あることが事実だと示す。

やさしい英語で： To show that something is true by providing evidence of it.

• Her results attest to her skill.
• The old letters attested to their long friendship.
• These buildings attest the importance of trade in the region.

使い方： attest to something (These ruins attest to the city's former wealth.); attest something (The surviving records attest the existence of an earlier settlement.)

類義語： demonstrate, show, prove, evidence

反対語： disprove

よく使う表現： attest to something, attest someone's ability, attest the existence

認証する、証明する

文書への署名や真実を述べる誓約によって、正式に確認する。

やさしい英語で： To officially confirm something by signing a document or making a formal promise to tell the truth.

• The witness will attest the signature.
• Two neighbors attested the will.
• The official attests each copy before it is sent abroad.

使い方： attest something (A qualified witness must attest the signature.)

類義語： certify, witness

よく使う表現： attest a document, attest a signature, attest a will