noun, takes genitive case の

  1. ancient times, distant past, antiquity.

Variations

Pronunciation Kanji Kana Is Common
古代 こだい

Contained Kanji Breakdown

old
コ ふる.い ふゆ (2nd, N4)
ten
ジュウ ジッ ジュッ (1st, N5)
mouth
くち コウ ク (1st, N4)
substitute, change, convert
ダイ か.わる よ (3rd, N4)
human radical (no. 9)
piling, ceremony radical (no. 56)
ヨク いぐるみ (Kentei 1)