adverb, noun, takes genitive case の

  1. for generations, from generation to generation, generation after generation, through the ages.

Variations

Pronunciation Kanji Kana Is Common
代々 だいだい
代代 だいだい

Contained Kanji Breakdown

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)
repeated kanji symbol