宣誓|せんせいsensei[0]heiban (flat)
This browser can't play pronunciations (needs Safari 18.4 or later, or Chrome / Edge / Firefox).
- noun, suru verb, transitive verboath; abjuration; pledge
Conjugation
| Dictionary form | 宣誓する(せんせいする) |
|---|---|
| Polite (masu) | 宣誓します(せんせいします) |
| Negative (nai) | 宣誓しない(せんせいしない) |
| polite (masen) | 宣誓しません(せんせいしません) |
| classical zu / nu | 宣誓せず・宣誓せぬ(せんせいせず・せんせいせぬ) |
| Past (ta) | 宣誓した(せんせいした) |
| polite (mashita) | 宣誓しました(せんせいしました) |
| Past negative (nakatta) | 宣誓しなかった(せんせいしなかった) |
| polite (masen deshita) | 宣誓しませんでした(せんせいしませんでした) |
| Te form | 宣誓して(せんせいして) |
| Potential | 宣誓できる(せんせいできる) |
| Passive | 宣誓される(せんせいされる) |
| Causative | 宣誓させる(せんせいさせる) |
| Causative passive | 宣誓させられる(せんせいさせられる) |
| Conditional (ba) | 宣誓すれば(せんせいすれば) |
| tara | 宣誓したら(せんせいしたら) |
| Volitional | 宣誓しよう(せんせいしよう) |
| polite (mashou) | 宣誓しましょう(せんせいしましょう) |
| Imperative | 宣誓しろ(せんせいしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym誓うちかうNeutralA verb meaning to swear or vow, common in everyday speech. 「宣誓」 is the formal act of reciting an oath aloud before others.
- Synonym誓約せいやくWrittenFormal prose for solemn pledges, as in 「誓約書」; it can be spoken or written, whereas 「宣誓」 is the public recitation of an oath.
- Synonym盟約めいやくWrittenFormal prose for a solemn pact or covenant, often between organizations or nations; 「宣誓」 stresses the public recitation of an oath.
- Synonym誓言せいげんWrittenA vow to the gods and the speaking of it, with the weight on the words pledged rather than a public ceremony; rare even in formal writing.
- Related契るちぎるWrittenAn archaic, literary verb for vowing in private, most often the eternal vows lovers swear to each other.
Use 「宣誓」 for reciting an oath publicly — at sports meets (「選手宣誓」), when starting a job, or in court. For everyday swearing use the verb 「誓う」; for a solemn pledge, spoken or written, use 「誓約」; lovers' vows are 「契る」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


