っけ
Meaning
Used in casual speech to recall or confirm information that the speaker believes they knew or heard before: “What was ... again?” or “Did/was ...?”
Conjugation
(A)Vる／Vない／Vた／Vなかった + っけ: (A)い-adj + っけ／かったっけ
Examples
Show translation
これ、誰の傘だっけ？
明日の集合時間は何時だっけ？
田中さんにメールを送ったっけ？
これ、どうやって使うんだっけ？
次の休みは何曜日だっけ？
財布、どこに置いたっけ？
grammarDetailPage.commonMistakes.title
grammarDetailPage.commonMistakes.wrong: これは誰の傘っけ？
grammarDetailPage.commonMistakes.correct: これは誰の傘だっけ？
grammarDetailPage.commonMistakes.why: A noun normally needs だ or だった before っけ.
grammarDetailPage.commonMistakes.wrong: 明日、何時に来るっけですか？
grammarDetailPage.commonMistakes.correct: 明日、何時に来るんだっけ？
grammarDetailPage.commonMistakes.why: Do not combine casual っけ with ですか. For polite speech, say 何時に来るんでしたっけ？
grammarDetailPage.commonMistakes.wrong: 何時に始まりますっけ？
grammarDetailPage.commonMistakes.correct: 何時に始まるっけ？
grammarDetailPage.commonMistakes.why: In casual speech, っけ normally follows the plain form 始まる, not the polite ます form. For polite speech, say 何時に始まりましたっけ？ or 何時に始まるんでしたっけ？
Key points
っけ is informal and is often used in self-talk or when checking remembered information with someone familiar. Unlike か, it emphasizes memory recall; unlike かな, it usually concerns information previously known or discussed. In polite speech, use forms such as でしたっけ, ましたっけ, or んでしたっけ.
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