adverb, noun
often; repeatedly; again and again
Archaic or formal literary term for 'often' or 'repeatedly'. In modern Japanese, たびたび is the standard reading for 度々, while どど is now rare and mostly encountered in older texts or formal writing.
See also: 度々 (たびたび)
古い手紙には「度々のご無沙汰をお詫び申し上げます」と書かれていた。
In the old letter, it was written, 'I apologize for my repeated neglect in writing.'
この書物では、どど同じ表現が使われている。
In this book, the same expression is used repeatedly.
The modern standard reading for 度々, meaning 'often' or 'frequently'. どど is its archaic/literary counterpart, now rarely used.
Reduplication of 度 (ど, 'time, occasion'), yielding the meaning 'time after time'. The reading どど is now archaic, while the same kanji are commonly read たびたび in modern Japanese.