1. 〔過失〕a fault;〔手抜かり〕an omission
    • 荷物が着かなかったのは彼の手落ちだった
    • It was his fault that our luggage did not arrive.
    • それはみんなの手落ちだった
    • We were all at fault.
    • 結婚式の用意はすべて手落ちなく行われた
    • All the preparations for the wedding were made 「most carefully [with the utmost care].