1) 1日中いちにちじゅう #5,388 Link copied! Common いちにちじゅう [0] Parts: 1 日 Meaning Shirabe Adverb Noun all day long; all the day; throughout the day 1日中いちにちじゅうテニスをしていたのだから。 He was playing tennis all day. Kanji 日 ニチ day, sun, Japan 中 チュウ in, inside, middle Forms 一日中#5,388一日中いちにちじゅう1日中#26,8191日中いちにちじゅういちにちじゅういちにちじゅう Learn this word with smart reviews that adapt to you Save word