一昨昨日 いっさくさくじつ Also written さきおとつい, さきおととい, 一昨々日 Meanings Noun, Adverb two days before yesterday; three days back (ago) Kanji 一 one. Read as イチ. 昨 yesterday. Read as サク. 日 day. Read as ジツ. Word lists JLPT N2 Jinuma: Japanese Dictionary · Word lists