確認|かくにんkakunin[0]heiban (flat)
This browser can't play pronunciations (needs Safari 18.4 or later, or Chrome / Edge / Firefox).
- noun, suru verb, transitive verbconfirmation; verification; validation; review; check; affirmation; identification
Conjugation
| Dictionary form | 確認する(かくにんする) |
|---|---|
| Polite (masu) | 確認します(かくにんします) |
| Negative (nai) | 確認しない(かくにんしない) |
| polite (masen) | 確認しません(かくにんしません) |
| classical zu / nu | 確認せず・確認せぬ(かくにんせず・かくにんせぬ) |
| Past (ta) | 確認した(かくにんした) |
| polite (mashita) | 確認しました(かくにんしました) |
| Past negative (nakatta) | 確認しなかった(かくにんしなかった) |
| polite (masen deshita) | 確認しませんでした(かくにんしませんでした) |
| Te form | 確認して(かくにんして) |
| Potential | 確認できる(かくにんできる) |
| Passive | 確認される(かくにんされる) |
| Causative | 確認させる(かくにんさせる) |
| Causative passive | 確認させられる(かくにんさせられる) |
| Conditional (ba) | 確認すれば(かくにんすれば) |
| tara | 確認したら(かくにんしたら) |
| Volitional | 確認しよう(かくにんしよう) |
| polite (mashou) | 確認しましょう(かくにんしましょう) |
| Imperative | 確認しろ(かくにんしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym確かめるたしかめるNeutralA native verb largely interchangeable with 「確認する」; more natural in speech, while 「確認」 leans formal and is common at work and in procedures.
- Related裏付けうらづけNeutralA noun for the evidence or backing behind a claim, as in 「証言の裏付け」— the proof itself, not the act of checking that 「確認」 names.
- Related証明しょうめいNeutralShowing something is true with reasons or evidence, as in 「身分証明」; it aims to convince others, while 「確認」 just checks that things are in order.
- Related立証りっしょうFormalEstablishing a fact by presenting evidence, mostly in law and trials, as in 「犯罪を立証する」; more formal than 「証明」, while 「確認」 is everyday checking.
- Related論証ろんしょうWrittenProving a proposition holds by logical argument; an academic, logic term. 「確認」 verifies facts and involves no chain of reasoning.
- Related見極めるみきわめるNeutralJudging after seeing through to the essence or watching to the end, as in 「真偽を見極める」; goes deeper and takes more time than 「確認」.
- Related突き止めるつきとめるNeutralTracking something down to its source — a cause or culprit, as in 「原因を突き止める」; the point is pinning down the target, while 「確認」 is general checking.
- Related見定めるみさだめるWrittenA written-style verb for looking carefully and then deciding, as in 「方向を見定める」; it stresses the judgment reached, more than 「確認」 does.
- Related見届けるみとどけるNeutralWatching something through to the end with your own eyes, as in 「最期を見届ける」; 「確認」 requires no such presence — reading or asking is enough.
- Related同定どうていWrittenAn academic term for identifying something as one and the same, e.g. a species: 「種を同定する」; in everyday use say 「特定」 or 「確認」.
For checking or verifying something, 「確認」 is the default; in casual speech 「確かめる」 sounds more natural. Use 「証明」 to prove something true, 「立証」 for legal proof, and 「突き止める」 to hunt down a cause or culprit.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


