Meaning of ＯＦ in Japanese

Words related to ＯＦ

オフかい(ofukai) 【オフ会 ·ＯＦＦ会】

(n) offline meeting (face-to-face meeting by people who normally interact online)

日本語用ようのワープロソフトには、Ｍｉｃｒｏｓｏｆｔ社しゃの「Ｗｏｒｄ」や、ＪＵＳＴＳＹＳＴＥＭ社しゃの「一太郎」などがあります。

Word processors for use with Japanese include Microsoft Word and JustSystem's Ichitaro.

So I thought my date, er rather, offline-meeting was going to be just me and her but things aren't that easy.