noun, takes genitive case の

  1. past days, bygone days, days of yore, the olden days.
  2. while still alive, during one's lifetime.

Variations

Pronunciation Kanji Kana Is Common
 
 
在りし日 ありしひ
 
 
 
ありし日 ありしひ

Contained Kanji Breakdown

exist, outskirts, suburbs
ザイ あ.る あり (5th, N3)
genius, years old, cubic shaku
サイ (2nd, N3)
hand, hand radical (no. 64)
シュ
soil, earth, ground
ド つち は (1st, N5)
day, sun, Japan
ひ にっ ニチ (1st, N5)