Word予よ定てい だった んです。yotei datta ndesu.Meaning(It's because) it was the plan.Part of speechsentencePronunciationCourseJapaneseLessonOffering explanation with んですBreakdown of yotei datta ndesu.予よ定ていyoteiplan; plans予よ定てい refers to a single scheduled instance or arrangement. It implies a fixed or pre-determined plan, often involving time or dates.だdato beんですndesuthe explanation is that...; it is that....