オフィス（オフィス、ofisu）
- office

The Japanese word オフィス refers to an "office," which is a place where administrative, professional, or clerical work is performed. It's the equivalent of the English word "office." It can refer to a physical building, a specific room, or the entire work environment. The word オフィス is used in a variety of contexts to describe where people work in a professional setting.

⚫︎新しいオフィスはとても広いです。 Translation: The new office is very spacious. ⚫︎ 私は毎日オフィスに通勤します。 Translation: I commute to the office every day. ⚫︎ あの会社はオフィスを移転しました。 Translation: That company relocated its office.

You use オフィス in conversations when you are talking about a place of work. ⚫︎ It can be used when describing where you work. ⚫︎ When discussing a company's workplace. ⚫︎ When making arrangements to meet someone at their workplace.

⚫︎ The word オフィス is written in katakana: オフィス. ⚫︎ It is not typically written in hiragana or kanji because it is a loanword from English. ⚫︎ There are no variations in how it’s written.

⚫︎ 職場（しょくば） - workplace ⚫︎ 会社（かいしゃ） - company (can also imply the office)

There isn't a direct antonym for オフィス as it describes a place. However, the opposite of "being at the office" could be: ⚫︎ 家（いえ） - home ⚫︎ 外出（がいしゅつ） - going out

明日はオフィスで会議があります。 ・Translation: There is a meeting at the office tomorrow. ・Explanation: This sentence describes an upcoming meeting and its location.

彼女はオフィスで働いています。 ・Translation: She works at the office. ・Explanation: This sentence simply states where she is employed.

The word オフィス comes directly from the English word "office". It was adopted into Japanese as a loanword, retaining the same meaning.