At a glance
～っけ is added to the end of a sentence when you are trying to remember something you once knew. It means "...again?" or "was it...?" and is mostly used in conversation.
Verb (past) + っけ
Verb (dictionary form) + んだっけ
Noun / な-adjective + だっけ / だったっけ
会議は何時からだっけ？ What time does the meeting start again?
How to form it
| Attaches to | Form | Example |
|---|---|---|
| Verb, past | ～たっけ | 行ったっけ |
| Verb, non-past | ～んだっけ | 行くんだっけ |
| い-adjective | ～かったっけ / ～いんだっけ | 寒かったっけ |
| な-adjective | ～だっけ / ～だったっけ | 静かだっけ |
| Noun | ～だっけ / ～だったっけ | 学生だっけ |
| Polite | ～ましたっけ / ～でしたっけ | 何でしたっけ |
In standard Japanese, っけ usually follows a past form, だ, or んだ. It does not attach directly to a plain non-past verb.