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