週一 しゅういち Also written 週イチ Meanings Adverb once a week Kanji 週 week. Read as シュウ. 一 one. Read as イチ. Words containing 週一 週一日 (しゅういちにち) one day a week 週一回 (しゅういっかい) once per week Word lists Colloquial Jinuma: Japanese Dictionary · Word lists