adverb, noun which may take the genitive case particle 'no'
repeatedly; over and over; time and again
Used to emphasize that an action or event happens many times. Often carries a nuance of accumulation or persistence.
重ね重ねのご迷惑をおかけして申し訳ありません。
I am sorry for causing you trouble again and again.
重ね重ねのお願いで恐縮ですが、もう一度ご検討いただけませんか。
I am embarrassed to ask repeatedly, but could you please reconsider once more?
adverb
exceedingly; sincerely; very much
Used in formal expressions to convey deep gratitude or apology. Often seen in set phrases like 重ね重ねありがとうございます or 重ね重ねお詫び申し上げます.
重ね重ねありがとうございます。
Thank you very much indeed.
重ね重ねお詫び申し上げます。
I sincerely apologize.