実証|じっしょうjisshou[0]heiban (flat)
This browser can't play pronunciations (needs Safari 18.4 or later, or Chrome / Edge / Firefox).
- suru verb, no-adjective, transitive verb, intransitive verbdemonstration; verification; substantiation; actual proof
Conjugation
| Dictionary form | 実証する(じっしょうする) |
|---|---|
| Polite (masu) | 実証します(じっしょうします) |
| Negative (nai) | 実証しない(じっしょうしない) |
| polite (masen) | 実証しません(じっしょうしません) |
| classical zu / nu | 実証せず・実証せぬ(じっしょうせず・じっしょうせぬ) |
| Past (ta) | 実証した(じっしょうした) |
| polite (mashita) | 実証しました(じっしょうしました) |
| Past negative (nakatta) | 実証しなかった(じっしょうしなかった) |
| polite (masen deshita) | 実証しませんでした(じっしょうしませんでした) |
| Te form | 実証して(じっしょうして) |
| Potential | 実証できる(じっしょうできる) |
| Passive | 実証される(じっしょうされる) |
| Causative | 実証させる(じっしょうさせる) |
| Causative passive | 実証させられる(じっしょうさせられる) |
| Conditional (ba) | 実証すれば(じっしょうすれば) |
| tara | 実証したら(じっしょうしたら) |
| Volitional | 実証しよう(じっしょうしよう) |
| polite (mashou) | 実証しましょう(じっしょうしましょう) |
| Imperative | 実証しろ(じっしょうしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym立証りっしょうWrittenWritten register. Means proving something by presenting evidence, mostly in court, as in 「無罪を立証する」; 「実証」 stresses confirming with facts and experiments.
- Synonym証明しょうめいNeutralNeutral. The all-purpose word for proving, also used for certificates; unlike 「実証」 it does not stress actual verification.
- Synonym確証かくしょうWrittenWritten. Conclusive, definite evidence; a noun focused on the evidence itself rather than the act of proving.
- Synonym検証けんしょうNeutralNeutral. Verifying or checking something, as in 「仮説を検証する」; it focuses on testing whether something is correct, while 「実証」 confirms with facts.
- Synonym論証ろんしょうWrittenWritten. Proves by laying out reasons and reasoning, so the focus is on the argument itself; grounds may include experimental results, while 「実証」 confirms with facts.
- Synonym証あかしNeutralNeutral but solemn in tone. Proof or witnessing, as in 「愛の証」; a weighty word for something that shows or proves.
- Synonym裏付けるうらづけるNeutralNeutral verb. To back a claim up with evidence, as in 「証言を裏付ける」; the verb counterpart of 「裏付け」.
- Related証拠しょうこNeutralNeutral and everyday. Evidence — whatever grounds can be put forward to back a claim; 「実証」 instead names the act of confirming something with facts.
- Related裏付けうらづけNeutralNeutral. Backing based on solid grounds, as in 「データの裏付け」; it stresses corroboration rather than the act of proving.
- Related示すしめすNeutralNeutral. To show or indicate, with very broad uses; it does not necessarily mean proving anything, unlike 「実証」.
- Related物語るものがたるNeutralNeutral. Used when the facts themselves make the point, as in 「数字が物語る」.
- Related傍証ぼうしょうWrittenWritten. Indirect, supporting evidence that corroborates a claim; it does not directly prove the point the way 「実証」 does.
- Related証左しょうさWrittenWritten. Evidence or proof, as in 「…の証左だ」; a literary word for grounds.
- Related証すあかすWrittenWritten. To prove something true with facts or grounds, as in 「身の潔白を証す」; not to be confused with 「明かす」, which means to reveal.
- Related証するしょうするWrittenWritten. Formal-document language for proving or guaranteeing, as in 「…を証する」.
- Related証跡しょうせきWrittenWritten. Traces or records left behind that evidence what took place; a term of auditing and legal usage.
- Related基礎付けるきそづけるWrittenWritten academic verb meaning to lay the foundation for a theory; rare in use.
Use 「実証」 to confirm a theory with facts such as experiments or data, as in 「実証実験」 or 「効果を実証する」. For proving in general say 「証明」; in court, 「立証」; for checking whether something is correct, 「検証」; for backing, 「裏付け」. 「確証」 and 「証拠」 name the evidence itself, 「傍証」 indirect corroboration, 「論証」 the reasoning process, and 「証左」「証跡」 are written words for proof. Among verbs, 「示す」 just shows, 「物語る」 lets facts speak, 「裏付ける」 backs a claim with evidence, and 「証す」「証する」「基礎付ける」 are written or academic.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


