〜っけ: 'What Was It Again?' (Recalling)
Reaching back into memory
〜っけ is the sound of someone reaching back into memory. You half-remember something but can't quite pin it down, so you ask — either out loud to a friend or quietly to yourself — to confirm or recall it. It's not a genuine first-time question; it signals that the answer is somewhere in your head, or your listener's, and you're trying to retrieve it.
明日は休みだっけ？
あした は やすみ だっけ？
Tomorrow's a day off, right?
Confirming a half-remembered fact with a friend.
モチの誕生日って、いつだっけ？
モチ の たんじょうび って、いつ だっけ？
When was Mochi's birthday again?
って marks the topic; だっけ does the recalling.
あれ、彼の名前、何だっけ？
あれ、かれ の なまえ、なん だっけ？
Huh, what was his name again?
Often muttered to oneself.
What っけ clips onto
The key habit: don't bolt っけ straight onto a bare noun or い-adjective. It rides on だ (for nouns / な-adjectives) or on a plain past form (た / だった).
| Base | Form | Example |
|---|---|---|
| Noun + だ | 〜だっけ | 今日は何曜日だっけ (What day is it today again?) |
| Noun + だった | 〜だったっけ | 約束は3時だったっけ (The plan was 3, right?) |
| Verb (plain past) | 〜たっけ | もう食べたっけ (Did we already eat?) |
| Verb + んだ | 〜んだっけ | 君も行くんだっけ (You're going too, right?) |
| い-adj (past) | 〜かったっけ | あの店、安かったっけ (Was that shop cheap?) |
The 〜んだっけ pattern is extremely common: the explanatory んだ softens it into "let me get this straight…". Compare 行くっけ (stiff, rarely used) with 行くんだっけ (natural).
The past-tense pull toward present facts
Here's the quirk worth internalising: っけ often appears with past tense even when the fact is present. The feeling is "wait, what was the situation again?" rather than "what is it now?" — so 今日は休みだったっけ can ask about a present-day fact while still reaching for だった, because you're rummaging through memory rather than stating the here-and-now. Present-form だっけ is fine too (今日は休みだっけ), but don't be surprised when a speaker slips into the past for something that's true right now.
っけ in real conversation
先生、宿題ってどこまでだったっけ。
せんせい、しゅくだい って どこまで だったっけ。
Teacher, how far was the homework again?
OK with a friendly teacher you're close to — still casual, so read the room.
ヤッタン、君も明日来るんだっけ？
ヤッタン、きみ も あした くる んだっけ？
Yattan, you're coming tomorrow too, right?
んだっけ = confirming what you think you heard.
あれ、この単語の意味、何だったっけ。
あれ、この たんご の いみ、なん だったっけ。
Hmm, what did this word mean again?
Talking to oneself while studying.
弟って、もう寝たっけ？
おとうと って、もう ねたっけ？
Did my little brother already go to sleep?
Plain past 寝た + っけ.
Where learners overreach
The one that actually gets people into trouble is register: っけ is firmly casual. Don't say 会議は何時ですっけ to your boss — it sounds far too familiar. Reach for 〜でしたか or 〜でしょうか instead. There is no polite ですっけ that's safe with a superior.
Three attachment slips round out the list. Don't hang it off a bare noun — it's 名前は何だっけ, not 名前は何っけ, because nouns and な-adjectives need だ (or だった) first. Don't bolt it onto a plain present verb either — 行くっけ feels off, so use the past 行ったっけ or the explanatory 行くんだっけ. And don't treat it as a real information question: っけ jogs a shared or personal memory, so to ask something genuinely new, just use か or the plain question form.
The short version
- 〜っけ = casually confirm or recall something half-forgotten.
- Attach to だ / だった / た, or use 〜んだっけ — not a bare noun or plain present.
- Past tense is common even for present facts.
- Casual only — never to superiors or in formal contexts.
Practice it
Choose the natural form using 〜っけ to confirm or recall.
＿＿＿に入れるのに最もよいものを選びなさい。
「あれ、タンジェントってサインでコサインを割るんだ＿＿＿？」「逆、逆」
Frequently asked questions
Can I use っけ with my teacher or boss?
Not in formal situations. っけ is very casual and familiar. With a superior, use a polite confirming form like 〜でしたか or 〜でしょうか instead. You might use it with a teacher you're genuinely close to, but read the room.
Why does っけ often appear with past tense even for present facts?
The nuance is 'what was the situation again?' — you're retrieving a memory. So 今日は休みだったっけ can refer to a present fact while still feeling natural with だった.
What's the difference between だっけ and んだっけ?
だっけ confirms a fact directly (会議は3時だっけ). んだっけ adds the explanatory んだ, giving a softer 'let me get this straight' feel and working smoothly after verbs (行くんだっけ).
Is っけ the same as just asking a question?
No. A plain question asks for new information; っけ signals you half-remember and want to confirm or recall it, usually with a familiar listener or to yourself.
Where 〜っけ fits
Shaky on this? Get these solid first
- Past Tense · N5 — The plain past た-form means 'did.' It follows the same sound changes as the て-form (just て→た, で→だ): 食べた, 行った, 飲んだ. Learn it by verb group.
Don't confuse it with
- 〜ものだ · N3 — 〜ものだ states general truths and common-sense advice, recalls how things used to be (〜たものだ), and voices strong feeling. Learn all four N3 uses and 〜ものではない.
- 〜という · N3 — 〜という names things (「ヤッタン」という犬), wraps hearsay (来ないという), and packages a clause into a noun (失敗したという事実). Learn all three N3 uses.
More N3 grammar to explore
Keep going with related patterns at the same level:
- 〜ことがある — Dictionary/ない-form verb + ことがある means 'sometimes' or 'there are times when' — an occasional event. Learn the formation, frequency adverbs, and how it differs from た-form ことがある (experience).
- 〜ことか — 〜ことか turns a question word into an exclamation of strong feeling: どんなに心配したことか ('how worried I was!'). Learn the formation, the rhetorical nuance, and common mistakes.
- 〜ことに — 〜ことに(は) fronts a sentence with the speaker's emotion: 驚いたことに ('to my surprise'), 残念なことに ('unfortunately'). Learn formation, the feeling-word rule, and placement.
- 〜くせに — 〜くせに means 'even though,' but always carries criticism or blame: 知っているくせに教えてくれない. Learn the formation, the same-subject rule, and how it differs from のに.
- めったに〜ない — めったに〜ない means 'rarely' or 'hardly ever.' Learn why it always pairs with a negative verb, how it compares to あまり〜ない, ほとんど〜ない, and 全然〜ない, plus examples.