noun
notice of abandonment
Legal term used in securities and insurance contexts for a formal notice of abandonment.
保険会社に委付通知書を提出した。
I submitted a notice of abandonment to the insurance company.
Compound of 委付 (ifu, 'abandonment') and 通知書 (tsūchisho, 'written notice'). The exact historical derivation is uncertain; the spelling is conventionally associated with legal abandonment notices.