Translation guide
Describes someone who has a lot of knowledge, especially about current events, a particular subject, or general matters. In Japanese, this is expressed through adjectives, verbs, and set phrases that emphasize being knowledgeable, up-to-date, or widely read.
Describing a person who has broad knowledge or is generally well-read.
A noun or na-adjective meaning 'extensive knowledge' or 'erudition'. Often used to describe someone who is well-read and knows a lot about many subjects.
A noun meaning 'a person who knows a lot'. Slightly more casual than 博識, and often implies knowing many facts or trivia.
彼女は本当に物知りだね。
She's really well-informed, isn't she?
A phrase meaning 'abundant in knowledge'. Used to describe someone with a wealth of information.
彼は歴史について知識が豊富だ。
He is well-informed about history.
Describing someone who keeps up with the latest news or developments.
A verb phrase meaning 'to be well-versed in' or 'to be thoroughly familiar with'. Often used with a specific field or topic.
彼は政治に精通している。
He is well-informed about politics.
A phrase meaning 'knowledgeable about the situation/circumstances'. Commonly used for being well-informed about current affairs or a specific matter.
彼はこの事件の事情に詳しい。
He is well-informed about this incident.
A noun meaning 'a well-informed person' or 'someone in the know', often implying access to insider or up-to-date information.
Emphasizing that someone's knowledge comes from good sources or extensive reading.
Literally 'studying well', but can imply being well-informed through diligent study or research.
彼はよく勉強しているから、何でも知っている。
He is well-informed because he studies a lot, so he knows everything.
Literally 'reads a lot of books', implying being well-informed through reading.
彼女は本をよく読んでいるから、話題が豊富だ。
She is well-informed because she reads a lot, so she has many topics to talk about.
彼は業界の情報通だ。
He is well-informed about the industry.