裏付ける|うらづけるurazukeru[4]nakadaka (mid-high)
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Definitions
- ichidan verb, transitive verbto support (a theory, claim, etc.); to back up; to substantiate; to prove
Conjugation
| Dictionary form | 裏付ける（うらづける） |
|---|---|
| Polite (masu) | 裏付けます（うらづけます） |
| Negative (nai) | 裏付けない（うらづけない） |
| polite (masen) | 裏付けません（うらづけません） |
| classical zu / nu | 裏付けず・裏付けぬ（うらづけず・うらづけぬ） |
| Past (ta) | 裏付けた（うらづけた） |
| polite (mashita) | 裏付けました（うらづけました） |
| Past negative (nakatta) | 裏付けなかった（うらづけなかった） |
| polite (masen deshita) | 裏付けませんでした（うらづけませんでした） |
| Te form | 裏付けて（うらづけて） |
| Potential | 裏付けられる（うらづけられる） |
| Passive | 裏付けられる（うらづけられる） |
| Causative | 裏付けさせる（うらづけさせる） |
| Causative passive | 裏付けさせられる（うらづけさせられる） |
| Conditional (ba) | 裏付ければ（うらづければ） |
| tara | 裏付けたら（うらづけたら） |
| Volitional | 裏付けよう（うらづけよう） |
| polite (mashou) | 裏付けましょう（うらづけましょう） |
| Imperative | 裏付けろ（うらづけろ） |
Common forms generated by rule; see the senses for honorific or irregular usage.
Synonyms & antonyms
- Synonym立証りっしょうWrittenWritten/formal prose. Proving a fact by presenting evidence; used mostly in law and trials, with a formal, procedural flavor.
- Synonym実証じっしょうWrittenWritten/formal prose. Verifying a hypothesis with actual facts or experiments; common in academic research.
- Synonym裏付けうらづけNeutralNeutral. The noun form of the headword: backing or supporting evidence. Often in 「裏付けを取る」.
- Synonym証明しょうめいNeutralNeutral. The most general word for proving something correct, from math to ID verification; not limited to backing up a claim with evidence.
- Synonym証拠だてるしょうこだてるWrittenWritten/formal prose. To prove by presenting evidence, but rare; in everyday speech 「証明する」 is the usual word.
- Related示すしめすNeutralNeutral. To show or indicate; the emphasis is on making something apparent, not necessarily on strict proof.
- Related物語るものがたるNeutralNeutral. To tell a story, but also used when facts themselves clearly show something, carrying a nuance of indirect corroboration.
- Related論証ろんしょうWrittenWritten/formal and academic: demonstrating that a proposition holds by logical reasoning; the focus is on the reasoning process.
- Related確証かくしょうNeutralNeutral noun for conclusive, solid evidence; often in 「確証がない」. The focus is on the evidence itself.
- Related基礎付けるきそづけるWrittenWritten/formal academic term, rarely used: to lay the foundation for a theory, rather than to back it up with evidence.
- Related証するしょうするWrittenWritten/formal prose with a strong literary flavor: to prove or guarantee, found mainly in formal documents.
- Antonym否定するNeutralAntonym. To deny or reject a claim — the opposite of backing it up with evidence to make it credible.
- Antonym反証するWrittenWritten/formal antonym. To overturn a claim by presenting counter-evidence — the opposite of providing supporting evidence.
Use 「裏付ける」 to back up a claim with data or evidence; 「証明する」 for formal proof; 「立証」 for presenting evidence in court; 「実証」 for academic verification.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese definitions
Kanji in this word
English equivalents
