掲示板（けいじばん、keijiban）
- bulletin board

The Japanese word 掲示板 (けいじばん) literally translates to "bulletin board" or "message board". It refers to a place where people can post information, announcements, or messages for others to see. This can be a physical board in a public space, or a digital forum on the internet. In essence, it serves as a platform for sharing information or exchanging ideas. It is important to know that 掲示板 is often used to refer to online forums.

⚫︎学校の掲示板 Translation: School bulletin board ⚫︎インターネットの掲示板 Translation: Internet message board ⚫︎会社の掲示板に新着情報を掲載しました。 Translation: I posted new information on the company bulletin board.

You can use 掲示板 in various contexts, both formal and informal. ⚫︎When talking about physical bulletin boards in schools, workplaces, or community centers. ⚫︎When referring to online forums or message boards on websites. ⚫︎When explaining where to find information or announcements. The context determines the precise meaning of the term. For example, if you say "私は掲示板を見ました" (Watashi wa keijiban o mimashita), it means that you read a notice on the bulletin board.

掲示板 is typically written in kanji 掲示板. The reading is けいじばん in hiragana. It is not common to write this word in katakana. There are no variations in the okurigana (the suffix hiragana).

⚫︎ メッセージボード (messējibōdo): message board (loanword, more common for online forums) ⚫︎ お知らせ (oshirase): notice, announcement ⚫︎ 告知 (kokuchi): announcement, notification ⚫︎ フォーラム (fōramu): forum (loanword, often for online discussions) ⚫︎ 電子掲示板 (denshi keijiban): electronic bulletin board (for online boards)

There aren't direct antonyms for 掲示板, because it describes a place or platform rather than an action or quality. However, the opposite action might be removing information from the bulletin board.

学校の掲示板に新しいイベントのお知らせが出ています。 ・Translation: There is a notice about a new event on the school bulletin board. ・Explanation: This sentence describes the location of the event information, using 掲示板 to specify the board in the school.

この掲示板は活発で、いつも新しい投稿がありますね。 ・Translation: This message board is active, and there are always new posts. ・Explanation: This sentence describes the activity level of an online forum, using 掲示板 to mean the online message board.

The word 掲示板 is formed from two components: 掲示 (keiji) and 板 (ban). 掲示 means "display" or "posting" and comes from the verb 掲示する (keijisuru), meaning "to post" or "to display". 板 means "board" or "plank." The combination of these two elements, therefore, directly translates to "display board" or "bulletin board."