ポスト
ポスト
posuto
= postbox; mailbox; also: position, post (job role)
ポスト (posuto) is a loanword from English ‘post’ — but in Japanese it takes on multiple meanings depending on context. Most concretely it means a postbox (the red cylindrical mailboxes seen on Japanese street corners), but it equally means a job position or role, as in a management post. In the social media era, ポストする (posuto suru — to post) has also become common for posting content online.
Posuto (ポスト) means: 1) Postbox/mailbox: the red cylindrical 郵便ポスト (yuubin posuto — mail post) on street corners, or a home mailbox. 手紙をポストに入れる (tegami wo posuto ni ireru — to put a letter in the postbox). 2) Position/role: an organizational role or rank. 管理職のポスト (kanrishoku no posuto — a management position), ポストを与える (posuto wo ataeru — to give someone a position/post). 3) Social media post: ポストする (posuto suru — to post online). X（旧Twitter）でポストする (X (kyuu Twitaa) de posuto suru — to post on X/Twitter).
Japan Post (日本郵便, Nihon Yuubin) operates the national postal network, and the 郵便ポスト (yuubin posuto) is their standard red cylinder, found throughout Japan. Collection times are posted on each box. For important mail, 速達 (sokutatsu — express delivery) stickers or going to the 郵便局 (yuubinkyoku — post office) directly are options. ポストカード (posuto kaado — postcard) uses ‘post’ in the mail meaning. In business, ポスト部長 (posuto buchou — deputy department head position) uses ‘post’ in the role meaning.
ポスト is written in katakana from English ‘post.’ The word ‘post’ in English has many meanings (mail, position, pole, after-) and Japanese has absorbed several of them into ポスト. The red cylindrical Japanese postbox (赤いポスト, akai posuto) is an iconic street-level sight — the distinctive red cylinder with the Japan Post mark is as recognizable as a London red phone box.
Everyday use
この手紙、帰り道にポストに入れておいてもらえる？
Kono tegami, kaeri-michi ni posuto ni irete oite moraeru?
Can you drop this letter in the postbox on your way home?
Casual / Social Media
昨日のポスト思ったよりバズった…1万いいねありがとうございます
Kinou no posuto omotta yori bazutta… ichi-man iine arigatou gozaimasu
Yesterday’s post went more viral than I expected… thank you for 10,000 likes
Formal / Cultural context
「ポスト」は英語postの多義性（郵便・職位・柱・後-)を日本語が複数義として吸収した語例であり、文脈により郵便受け・組織上の職位・SNS投稿の各意味に分化する。特にX（旧Twitter）が2023年に「ツイート（tweet）」の公式名称を「ポスト（post）」に変更したことで、SNS用語としての「ポスト」の使用頻度が急増した。
‘Posuto’ wa eigo post no taigii-sei (yuubin shokuii hashira ato-) wo Nihongo ga fukusugi toshite kyuushu shita gorei de ari, bunmyaku ni yori yuubin-uke soshiki-jou no shokuii SNS toukoo no kaku imi ni bunka suru. Toku ni X (kyuu Twitaa) ga 2023-nen ni ‘tsuiito (tweet)’ no koushiki meishou wo ‘posuto (post)’ ni henkou shita koto de, SNS yougo toshite no ‘posuto’ no shiyou hindo ga kyuuzou shita.
‘Posuto’ is an example of Japanese absorbing the multiple meanings of English ‘post’ (mail, position, pole, after-) as multiple senses, differentiating by context into mailbox, organizational position, and social media post. In particular, when X (formerly Twitter) officially changed ‘tweet’ to ‘post’ in 2023, the frequency of ‘posuto’ as a social media term increased sharply.
Japan’s red cylindrical postboxes (赤いポスト, akai posuto) are cultural icons. Introduced in 1901, the distinctive circular design (originally hexagonal, then cylindrical by 1908) became ubiquitous throughout Japan and its former territories. The Japan Post red and white color scheme, combined with the characteristic shape, makes these boxes immediately recognizable — they appear in countless photographs as signifiers of ‘Japan.’ Some historic postboxes have been preserved as landmarks, and limited-edition red postbox merchandise is sold at Japan Post offices.
The privatization of Japan Post in 2007 — converting the national postal service into a partially private corporation — was a landmark political event. Prime Minister Junichiro Koizumi framed the 2005 election essentially as a referendum on postal privatization. The 郵便ポスト (postal postbox) became an unlikely political symbol in this debate, as postal savings (郵便貯金, yuubin chokin) at Japan Post held an enormous share of Japanese household savings. This gave a humble street-corner mailbox an outsized role in debates about Japan’s financial system and government role in everyday life.
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