一昨昨日さきおとついMeaningsNounAdverb1. two days before yesterday; three days back (ago)Other spellings一昨々日さきおとついUsage share unknownOther readings一いっ昨さく昨さく日じつ一昨昨日さきおととい一いっ昨さく々さく日じつ一昨々日さきおとといKanji used一one昨previous日sun