忘ぼう失しつ

noun, noun or participle which takes 'suru', transitive verb

forgetting; losing (memory, object)

Formal or literary term for forgetting or losing something, often used in legal, psychological, or written contexts. More common in everyday speech is 忘れる.

• 重じゅう要ような書しょ類るいを忘ぼう失しつしてしまった。

  I lost an important document.

• 記き憶おくの忘ぼう失しつは高こう齢れい者しゃに多おおい問もん題だいだ。

  Memory loss is a common problem among the elderly.