Usage patterns 〈 事こと 〉 を 再さい 度ど 確かく 認にん する to check/verify something once more
Please check the contract details once more.
再さい 度ど 〈 人ひと 〉 に 連れん 絡らく する to contact someone again
If there's no response, we'll contact the customer again.
再さい 度ど 〈 動どう 詞し 〉 を 試こころ みる to attempt to do something again
Since the connection failed, I tried logging in again.
再さい 度ど 〈 事こと 〉 が 発はっ 生せい する for a problem or incident to occur again
The same malfunction occurred again.
Kanji 再 again, twice, second time 度 degrees, occurrence, time Related words もう一度 is a casual, everyday way to say 'one more time', while 再度 is slightly more formal and typical of written or business language.
再び is literary and emphasizes the repeated occurrence of an event, whereas 再度 is neutral and common in instructions or requests.
改めて suggests doing something afresh or from a new angle, while 再度 simply means doing the same action one more time.
再度 is a full adverb meaning 'once again' that can stand alone in a sentence, while 再 is a prefix that must attach directly to another Sino-Japanese word.
Word family renegotiation; further discussion; reopening of talks
repleading; pleading again
reconfirmation; double check
reassembly; reassembling
Etymology Compound of 再 (sai, 'again') and 度 (do, 'time, occurrence'). The reading is on'yomi, and the word has been used since at least the early modern period.
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