週しゅう四よっ日かMeanings1expressionfour days a weekUsed to describe a schedule or frequency of four days per week.彼かれは週しゅう四よっ日かジムに通かよっている。He goes to the gym four days a week.その会かい社しゃは週しゅう四よっ日か勤きん務むを導どう入にゅうした。The company introduced a four-day work week.