誓約|せいやくseiyaku[0]heiban (flat)
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- noun, suru verb, transitive verboath; vow; pledge; covenant
Conjugation
| Dictionary form | 誓約する(せいやくする) |
|---|---|
| Polite (masu) | 誓約します(せいやくします) |
| Negative (nai) | 誓約しない(せいやくしない) |
| polite (masen) | 誓約しません(せいやくしません) |
| classical zu / nu | 誓約せず・誓約せぬ(せいやくせず・せいやくせぬ) |
| Past (ta) | 誓約した(せいやくした) |
| polite (mashita) | 誓約しました(せいやくしました) |
| Past negative (nakatta) | 誓約しなかった(せいやくしなかった) |
| polite (masen deshita) | 誓約しませんでした(せいやくしませんでした) |
| Te form | 誓約して(せいやくして) |
| Potential | 誓約できる(せいやくできる) |
| Passive | 誓約される(せいやくされる) |
| Causative | 誓約させる(せいやくさせる) |
| Causative passive | 誓約させられる(せいやくさせられる) |
| Conditional (ba) | 誓約すれば(せいやくすれば) |
| tara | 誓約したら(せいやくしたら) |
| Volitional | 誓約しよう(せいやくしよう) |
| polite (mashou) | 誓約しましょう(せいやくしましょう) |
| Imperative | 誓約しろ(せいやくしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym宣誓せんせいNeutralReciting an oath aloud in public, as in 「選手宣誓」 or 「宣誓式」; the focus is on the public ceremony of swearing.
- Synonym盟約めいやくNeutralSolemnly swearing an agreement, as in 「盟約を結ぶ」; often used for alliances, while 「誓約」 centers on an individual's pledge.
- Synonym誓うちかうNeutralThe verb 'to swear', the most common choice; 「誓約」 is a noun for formal, often written pledges such as 「誓約書」.
- Synonym約束やくそくNeutralThe everyday word for a promise or arrangement; 「誓約」 is far more solemn and carries the sense of taking an oath.
- Synonym誓言せいげんWrittenWords sworn to the gods or Buddha; a written/formal term that is not often used.
- Related契りちぎりWrittenA pledge or covenant, also a union between man and woman or a bond from a past life; archaic and literary, with a romantic flavor.
- Related契るちぎるWrittenThe verb: to pledge or form a bond, also for a couple sharing a bed; archaic, found mostly in literature.
- Antonym破約はやくNeutralThe antonym: breaking or cancelling a promise or contract, the opposite of making a pledge.
Use 「誓約」 for a solemn pledge or signed undertaking, as in 「誓約書」. Say 「宣誓」 for a public oath, 「約束」 for everyday promises, 「誓う」 for the verb. 「盟約」 suits alliances; 「誓言」 is a rare written term; 「契り」/「契る」 are literary; 「破約」 is the antonym.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


