also: わすれもん
lost article; thing left behind
Refers to an item that was accidentally left somewhere and is now missing. Often used in contexts like train stations, lost-and-found, or personal anecdotes.
電車に忘れ物をしてしまった。
I left something on the train.
Lost items are kept at the station counter.
leaving something behind; forgetting something
Focuses on the act of forgetting or leaving something behind, rather than the object itself. Often used with verbs like する or ないように.
忘れ物がないか、もう一度確認してください。
Please check again to make sure you haven't left anything behind.
忘れ物が多いので気をつけている。
I often forget things, so I'm being careful.
I left something behind on the train.
I noticed I'd forgotten something right after leaving the house.
I went back to school to get something I'd left there.
I contacted the station's lost-and-found office.
I checked that I hadn't left anything behind before leaving.
Search-only kana-kanji mixed form; not a practical spelling.
Kana spelling is common in everyday writing, especially when the kanji is not needed.