Vocabulary What does じゃ (ja) mean? じゃ means well then, so (casual). Quick factsReadingじゃRomajijaLevel (estimated, JLPT framework)N5 じゃじゃN5 · estimated, JLPT frameworkjawell then, so (casual)Example sentencesじゃあ、また明日(あした)ね。Well then, see you tomorrow.じゃあ、私(わたし)が行(い)きます。Well then, I'll go.Also written: じゃあ