Translation guide
The English word 'anonymous' refers to someone or something whose name or identity is not known or not revealed. In Japanese, expressing this concept depends on context: whether you are talking about an unknown person, an undisclosed author, a nameless source, or something done without attribution. The most common and versatile word is 匿名 (tokumei), but other expressions like 無名 (mumei) for 'nameless' or 名無し (nanashi) for 'no name' are used in specific situations. Japanese also often uses passive or indirect constructions to convey anonymity without a direct equivalent.
When someone's name is kept secret or not revealed, such as in an anonymous letter, tip, or donor.
an anonymous tip · to remain anonymous · an anonymous donor
The standard word for 'anonymous' when identity is intentionally hidden. Can be used as a noun or with の to modify nouns.
匿名の手紙が届いた。
An anonymous letter arrived.
匿名で寄付をした。
I made an anonymous donation.
Literally 'with name concealed', used when someone chooses to remain anonymous, often in formal contexts.
名前を伏せて意見を述べた。
I expressed my opinion anonymously.
A literary or formal expression meaning 'keeping one's name secret'. Rare in everyday speech.
名を秘して寄稿した。
Contributed anonymously.
When the person who made something (a book, painting, quote) is not known, often because it's old or unattributed.
an anonymous poem · the author is anonymous · an anonymous quote
Means 'author unknown'. Used for works whose creator cannot be identified. Can be used as a noun or with の.
この詩は作者不明です。
This poem is anonymous (author unknown).
When someone or something is not famous, not known by name, or lacks a distinct identity, like an anonymous crowd or an obscure artist.
an anonymous crowd · anonymous faces · an anonymous benefactor
When an action or creation is not credited to anyone, such as an anonymous contribution or a work with no byline.
an anonymous survey · posted anonymously · an anonymous comment
When something is so ordinary or lacking distinctive features that it seems anonymous, like an anonymous building or a generic hotel room.
an anonymous hotel room · anonymous suburbs · an anonymous-looking building
匿名 (tokumei) is the most common and versatile, meaning 'anonymous' in the sense of identity hidden. 無名 (mumei) means 'nameless' or 'unknown', often implying lack of fame. 無記名 (mukimei) specifically means 'unsigned' or 'without a name written', used for ballots, surveys, etc.
For works whose author is simply unknown (not intentionally hidden), 作者不明 (sakusha fumei) is more natural than 匿名. 匿名 implies deliberate concealment.
Japanese often avoids stating the agent, which can naturally convey anonymity. For example, '寄付が行われた' (A donation was made) leaves the donor unspecified, implying anonymity without using a specific word.
彼は匿名を希望した。
He wished to remain anonymous.
この本の著者は不明です。
The author of this book is anonymous.
匿名の情報提供を受けた。
I received an anonymous tip.
An anonymous painting was discovered.
A more colloquial way to say 'I don't know who wrote it', implying anonymity. Useful in conversation.
この記事、誰が書いたかわからないんだよね。
This article is anonymous, you know?
A formal, literary term for 'anonymous author', often used in bibliographic contexts. Rare.
佚名の作品として扱われる。
It is treated as an anonymous work.
Means 'nameless' or 'unknown'. Often used for people who are not famous or for things without a known name. Can imply obscurity.
彼はまだ無名の画家だ。
He is still an anonymous (unknown) painter.
無名の英雄たち
anonymous heroes
Literally 'nameless'. Often used in casual or online contexts for someone without a name or using a pseudonym. Can be a noun.
名無しの投稿者
anonymous poster
ネットでは名無しで活動している。
I'm active online anonymously (without a name).
A straightforward phrase meaning 'without a name'. Can be used for objects, places, or people.
名前のない駅
an anonymous station (a station with no name)
Means 'unsigned' or 'without a name written'. Often used for ballots, surveys, or contributions where no name is attached.
Using 匿名 as an adverb with で to mean 'anonymously'. Works for actions like posting, donating, or reporting.
匿名で情報を提供した。
Provided information anonymously.
Japanese often uses passive or spontaneous constructions to describe actions without naming the doer, which can convey anonymity naturally.
この作品は誰によって作られたかわからない。
It is not known by whom this work was made. (implying anonymous creation)
寄付が行われた。
A donation was made. (agent unspecified, could be anonymous)
anonymous streetscape
Means 'lacking individuality' or 'impersonal'. Can describe anonymous, bland environments.
無個性なホテルの部屋
an anonymous hotel room