承知する · noun or participle which takes 'suru'
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 承知する | 承知しない |
| Polite | 承知します | 承知しません |
| Past polite | 承知しました | 承知しませんでした |
| Past | 承知した | 承知しなかった |
| Te-form | 承知して | 承知しないで |
| Desire | 承知したい | 承知したくない |
| Potential | 承知できる | 承知できない |
| Passive | 承知される | 承知されない |
| Causative | 承知させる | 承知させない |
| Causative passive | 承知させられる | 承知させられない |
| Volitional | 承知しよう | |
| Polite volitional | 承知しましょう | |
| Imperative | 承知しろ | 承知するな |
| Conditional | 承知すれば | 承知しなければ |
| Tara conditional | 承知したら | 承知しなかったら |
noun, noun or participle which takes 'suru', transitive verb
Used when someone is aware of a fact or situation, often in formal contexts. Common in the phrase ご承知の通り (as you know).
As you are aware, we will be closed tomorrow.
I am aware of that matter.
noun, noun or participle which takes 'suru', transitive verb
acceptance; consent; agreement
Expresses that one accepts a request, condition, or instruction. Often used in business settings to mean 'understood' or 'I'll comply'.
I accept those terms.
I acknowledged my boss's instructions and got started right away.
noun, noun or participle which takes 'suru', transitive verb
forgiving; pardoning
Almost always used in the negative as 承知しない or 承知できない to mean 'won't forgive' or 'won't stand for'. Stronger than a simple refusal.
I cannot forgive such rude behavior.
I won't forgive you if you lie.
He agreed to those conditions.
He is fully aware of the risk.
If you do that, the teacher won't stand for it.
I persuaded him to accept the plan.
ははあ is an old-fashioned spoken acknowledgment, while 承知 is the more formal noun/verb used to say one understands and accepts an order.
承知する means to understand and consent to something, close to 心得る's sense of accepting a duty, but 承知する is more about agreement than internal readiness.
承知する means 'to know/understand and accept' with a polite but less deferential tone than 存じる, which is strictly humble language about the speaker.
承知 is used to acknowledge and agree to do something, often in polite or service contexts, while 納得 focuses on being personally convinced by an explanation.
承知 is the everyday, slightly softer word used to say one accepts or understands (common in service and casual business speech), while 承諾 is the formal, often written term for giving consent.
承知 is the humble, business-appropriate way to acknowledge or accept something, used where the casual ＯＫ would sound too informal.
by mutual consent; with full knowledge and agreement