WordでdeMeaningreason particlePart of speechparticlePronunciationCourseJapaneseLessonExplaining why using noun + でUsages of deトラフィック で 遅おくれた。torafikku de okureta.I was late because of traffic.ミーティング で 遅おそく なった。miithingu de osoku natta.I was late due to a meeting.Literally: (I) became late due to a meeting.暑あつさ で 頭ず痛つう が した。atusa de zutuu ga sita.I had a headache because of the heat.