How to say "verify" in Japanese

• ただすCommon
  godan verb, transitive verbCovers 'verify' in the sense of establishing the truth of something — whether a claim, story, or suspicion is actually true — often through questioning or close examination. Usually written in kana.
  校長こうちょうは彼かれに無断欠勤むだんけっきんの理由りゆうをただした。↗

  The principal called him to account for being absent without an excuse.
• 確かめるたしかめるJLPT N3approx.Common
  ichidan verb, transitive verbThe general word for making sure or checking: use it to verify a fact or a detail, confirming that something is the case before you rely on it.
  窓まどが閉しまっているか確たしかめとけ。↗

  See that the window is closed.

For 'verify', 「確かめる」 is the general choice when you check or make sure that something is the case, while 「ただす」 fits establishing the truth of a claim or account — whether something is really so.

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

• ただすto ascertain
• 確かめるたしかめるto make sure
• ベリファイverify
• 証するしょうするto prove
• 証すあかすto prove
• 証すしょうすto prove
• 聞きただすききただすto find out the truth
• 明かすあかすto prove
• 験するけんするto check (a calculation)