Translation guide
The English word 'promise' covers making a commitment, giving assurance, and showing potential. In Japanese, different words and patterns are used depending on whether it's a personal promise, a formal pledge, or a sign of future success.
Expressing that you will definitely do something, often in casual or everyday contexts.
The most common word for a promise between people. Used for agreements, appointments, and commitments.
I promised to go to the movies tomorrow.
Pattern for 'promise to do something'. The verb before と is in dictionary form.
He promised to help.
To break a promise.
He often breaks his promises.
To keep a promise.
It's important to keep promises.
Expressing a serious, often public or written commitment, such as a vow or oath.
A solemn vow or oath, often used in formal contexts like weddings or official declarations.
Describing someone or something that seems likely to succeed or develop well.
Emphasizing that something will definitely happen or is certain.
Means 'definitely do' or 'without fail'. Stronger than a simple promise; implies certainty.
When saying someone 'shows promise' (potential), do not use 約束. Use 有望 or 将来性 instead. 約束 is only for commitments between people.
He is a promising athlete.
約束 is a general promise between individuals, while 誓い is a solemn vow often with emotional or ceremonial weight. Use 誓い for weddings, oaths, and formal pledges.
You must keep your promises.
彼らは結婚の誓いを交わした。
They exchanged wedding vows.
A written pledge or covenant, often used in legal or organizational contexts.
He took a pledge to abstain from alcohol.
A public pledge, especially a campaign promise by a politician.
The prime minister promised tax cuts.
Describes a person or thing that shows great promise or potential. Often used as '有望な' (promising).
He is a promising young writer.
This research is very promising.
Future potential or prospects. Often used in phrases like '将来性がある' (to have a future/promise).
This company has a promising future.
To have prospects or promise. Used for situations or people.
He shows promise of success.
I promise to write back.