1. success or failure;〔結果〕the result
    • 成否のほどは分からない
    • I don't know if [whether] I will succeed or not.
    • この計画の成否は天候次第だ
    • Whether this plan succeeds or not depends on the weather.
    • 成否が分かり次第お知らせします
    • I'll 「let you know the outcome [inform you of the results] as soon as I find out.