A very common particle-like expression placed after a noun to mark the topic or subject matter of speaking, thinking, writing, research, questions, and similar actions.
per; for every
Used after a counted unit to express a rate, fee, allowance, or allocation. This use is more limited and somewhat formal; につき or ごとに is often the more common everyday wording.
Let's discuss this problem.
I have a question about his statement.
A fee of 100 yen is charged per use.
One set of materials will be distributed for each participant.
について and に関して both mean 'about/regarding', but に関して sounds slightly more formal and is often used in written or business contexts.
について can mean 'per' in formal contexts, but につき is the more natural and common choice for rates like 一人につき.
について is a neutral topic marker meaning 'about', while を巡って specifically signals debate, conflict, or controversy surrounding the topic.
について means 'about/concerning' in a neutral, general sense, while に対して more strongly marks a target of an action, attitude, or contrast.
について is a general-purpose, less formal way to say 'about', usable in both speech and writing, unlike the formal written に関し.
について marks the topic being discussed, while に対して indicates direction, target, or contrast, so they are not interchangeable despite both following a noun with に.
について is a neutral, general 'about/concerning' that works for any topic, while にあたっては is more formal and specifically ties the statement to an action or occasion.
A particle-like expression written almost always in kana in modern Japanese. The rare kanji spelling に就いて reflects a conventional kanji association with つく/ついて, but it should be learned primarily as the fixed expression について.