How to say "verification" in Japanese

Choosing the right word
  • 確認かくにんJLPT N3approx.Common
    noun, suru verb, transitive verbCovers verification in the everyday sense of checking that something is correct, done, or in order. The usual choice for double-checking details, documents, or arrangements.
    予約よやくは確認かくにんされています。↗
    I have a confirmed reservation.
  • 検証けんしょうCommon
    noun, suru verb, transitive verbThe closest match for verification as an act of testing whether a claim, method, or result actually holds. Typical in analytical, scientific, and technical contexts where something is examined for validity.
    この段階だんかいを踏ふまえ、抑圧よくあつという概念がいねんをさらに詳細しょうさいに検証けんしょうしていくことになります。↗
    From this point we go on to an even more detailed examination of the concept of repression.
  • 実証じっしょうCommon
    suru verb, no-adjective, transitive verb, intransitive verbVerification in the sense of substantiating something with actual evidence — demonstrating that it is real or true rather than merely checking it. Common in talk of empirical support for claims or theories.
    この理論りろんの根拠こんきょをこれから実証じっしょうしよう。↗
    I am going to substantiate this theory.
  • 追試ついしCommon
    noun, suru verb, transitive verbRestricted to verification of experimental results by repeating the original experiment — replication in the strict sense. It is not a general word for verification and will sound odd outside research contexts.
  • 証明しょうめいJLPT N3approx.Common
    noun, suru verb, transitive verbPrimarily means proof or proving — establishing something conclusively, as in mathematics. It can translate 'verification' only in that conclusive sense, so it is seldom the word for routine checking or confirmation.
    私が間違まちがっていない事ことを証明しょうめいしよう。↗
    I'll show you that I am right.

For everyday checking use 確認; for testing whether a claim, method, or result holds use 検証; 実証 demonstrates something with evidence, 追試 replicates experiments, and 証明 is conclusive proof.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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