Word確信かくしんするkakushinsuruMeaningto be certain; firmly believePart of speechverbPronunciationCourseHardcore JapaneseLessonArranging an appliance repair visitUsages of kakushinsuru彼かれ が 来くる と 確信かくしんしました。kare ga kuru to kakushinshimashita.I became certain that he would come.