Translation guide
In Japanese, the concept of a 'third party' is expressed through several terms that differ by context: a neutral outsider, a legal entity, or an uninvolved person. The most common and versatile term is 第三者.
third party (general)
Referring to someone who is not directly involved in a situation, often in a neutral or objective sense.
The standard term for a third party in most contexts, including legal, business, and everyday situations. It implies an external, uninvolved person or entity.
Let's discuss this issue with a third party present.
It's important to hear opinions from a third party.
Literally 'outsider,' often used when emphasizing that someone is not a member of a group or organization. Slightly more exclusive than 第三者.
Entry by outsiders is prohibited.
Means 'another person' or 'stranger.' In some contexts, it can imply a third party, especially when contrasting with oneself or one's group. Less formal than 第三者.
You must not cause trouble for others (third parties).
Referring to a third party in legal documents, contracts, or formal agreements.
Describing someone who happens to be present but is not participating, often in an incident or accident.
Also used for bystanders, especially in news reports or formal descriptions of events.
At the time of the accident, there was a third-party witness.
Literally 'bystander' or 'onlooker.' Emphasizes passive observation rather than involvement. Often used in psychological or social contexts.
第三者 is the most neutral and widely used term for a third party, suitable for legal, business, and everyday contexts. 部外者 emphasizes exclusion from a group and is often used in rules or restrictions. 他人 simply means 'another person' and can imply a third party in casual speech, but it lacks the formal or legal nuance of 第三者.
In English, 'third party' and 'third person' are sometimes confused. In Japanese, 第三者 means 'third party,' while 三人称 (さんにんしょう) means 'third person' in grammar. Do not use 三人称 to mean an uninvolved person.
You must not infringe upon the rights of a third party.
The bystanders were not involved in the incident.