一昨日（おととい）— the day before yesterday
一昨日 です か。
The day before yesterday?
一昨日おととい
the day before yesterday
おととい
accent [3]In detail
Words
一昨日ototoithe day before yesterday
ですdesu(polite sentence ending)
かka(question marker)
Kanji
一イチ・
昨サクyesterday; previous
日ニチ・
Learn おととい as a whole word: you cannot build this reading from the usual readings of the individual kanji. It means the day before 昨日, “yesterday.”
Coco-sensei