Tag Questions and Mon | Danish Grammar

English makes tag questions agonisingly complex: isn't it?, doesn't he?, won't you?, haven't they?, did she? — the tag must copy the tense, the auxiliary, the subject, and flip the polarity. Danish, mercifully, does almost none of this. It has essentially one invariant tag pair: you append ikke? after a positive statement and vel? after a negative one, and you're done. No agreement, no auxiliary-matching, no subject copy. This page covers that pair, the related ikke sandt?, and the wonderful particle mon, which lets you turn any question into a musing "I wonder…".

The invariant tag: ...ikke? and ...vel?

A tag question invites the listener to confirm what you've said. In Danish the choice between the two tags depends on the polarity of the main statement.

After a positive statement → ikke? (literally "not?", inviting agreement).

Du kommer i morgen, ikke?

You're coming tomorrow, aren't you?

Det er en god film, ikke?

It's a good film, isn't it?

After a negative statement → vel? (inviting agreement with the negative).

Du kommer ikke i morgen, vel?

You're not coming tomorrow, are you?

Han har ikke ringet, vel?

He hasn't called, has he?

That's the whole core system. Where English would generate aren't you / isn't it / has he / are you depending on the sentence, Danish uses the same two words every time. The logic is symmetrical: a positive claim is tagged with the negative word ikke? ("…isn't that so?"), and a negative claim is tagged with vel?, the particle that leans on a shared negative expectation.

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Polarity rule of thumb: positive sentence → ikke?; negative sentence → vel?. The tag flips against the statement, exactly like English — but the words never change.

...ikke sandt? — the fuller, slightly formal tag

You can also tag with ikke sandt? (literally "not true?"), which is a touch more emphatic or formal than bare ikke?. It works after a positive statement.

Vi havde aftalt klokken syv, ikke sandt?

We'd agreed on seven o'clock, hadn't we?

In casual speech, plain ikke? (often pronounced and even written informally as ikk'?) dominates; ikke sandt? sounds a shade more deliberate and is common when you're appealing to a fact you expect the listener to confirm.

vel as a softener — and its overlap with the tag

vel is doing double duty here. As a tag after a negative it means "…are you?". But vel is also a general appeal-for-agreement particle (covered more fully at pragmatics/vel), and it can soften a question or statement on its own.

Det gør vel ikke noget?

It doesn't matter, does it?

Du er vel ikke sur på mig?

You're not angry with me, are you?

Here vel sits inside the clause (in the sentence-adverbial field, after the finite verb) and pre-emptively softens the question, expressing that you hope the answer is "no, of course not."

Answering a negative tag: jo, not ja

Danish, like German, has a three-way answer system: ja (yes, to a positive question), nej (no), and jo (yes, contradicting a negative). When someone tags a negative statement and you want to contradict it — to say "yes, actually I am / it is" — you must use jo, not ja.

— Du kommer ikke, vel? — Jo, jeg kommer!

— You're not coming, are you? — Yes (I am), I'm coming!

— Du har vel ikke set mine nøgler? — Jo, de ligger på bordet.

— You haven't seen my keys, have you? — Yes (I have), they're on the table.

Using ja to contradict a negative is one of the most distinctive learner errors, because English has no jo and uses "yes" for both. If you simply agree with the negative ("no, I'm not coming"), you use nej.

— Du kommer ikke, vel? — Nej, desværre ikke.

— You're not coming, are you? — No, unfortunately not.

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After a negative question or tag: contradict it with jo ("yes, I do/am"), agree with it with nej ("no, I don't"). ja never answers a negative.

mon — the "I wonder" particle

mon turns a question into a speculation. It signals that you're musing, not really expecting an answer — the closest English equivalents are "I wonder…" or "do you suppose…?". It is one of the most charming little words in Danish and has no single-word English counterpart.

mon can sit in two places:

Clause-initially, opening a wondering question (and triggering the normal question-style verb-second order):

Mon han kommer i dag?

I wonder if he's coming today?

Mon ikke det bliver regnvejr?

I rather think it'll rain, don't you? (lit. 'wonder-not it becomes rain')

That second pattern, mon ikke…?, is idiomatic and very common: it's a soft, almost rhetorical "surely it will…?", expressing a hunch you expect to be confirmed.

Inside the clause, in the sentence-adverbial field, tucked in among other adverbs — often in a hv-question:

Hvor er hun mon henne?

Where can she be, I wonder?

Hvad mon han mener med det?

What do you suppose he means by that?

In these, mon doesn't change the basic word order of the question; it just adds the "I wonder" colouring. The position is the same slot the sentence adverbs occupy (see adverbs/overview).

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mon = "I wonder / do you suppose." It marks a question as musing rather than demanding. There's no English word for it, so learners under-use it — sprinkling it in instantly sounds more native.

Common Mistakes

1. Inventing English-style agreeing tags. Danish does not copy the auxiliary, tense, or subject — there is no gør han? / er det? / har de? tag built from the verb.

❌ Du kommer i morgen, gør du ikke?

Incorrect — Danish doesn't build a verb-copy tag like English 'don't you'.

✅ Du kommer i morgen, ikke?

You're coming tomorrow, aren't you?

2. Using ikke? after a negative statement. A negative needs vel?.

❌ Du kommer ikke, ikke?

Incorrect — after a negative, the tag is vel?

✅ Du kommer ikke, vel?

You're not coming, are you?

3. Answering a negative tag with ja. Contradicting a negative requires jo.

❌ — Du kan ikke lide kaffe, vel? — Ja, jeg kan!

Incorrect — must be jo to contradict a negative.

✅ — Du kan ikke lide kaffe, vel? — Jo, jeg kan godt!

— You don't like coffee, do you? — Yes (I do), I like it!

4. Forgetting verb-second after a clause-initial mon. mon opens the clause, so the finite verb still comes next.

❌ Mon han i dag kommer?

Incorrect word order after mon.

✅ Mon han kommer i dag?

I wonder if he's coming today?

5. Translating "I wonder" with a full clause instead of mon. Learners reach for jeg undrer mig på om…, which is heavy and unidiomatic for casual wondering.

❌ Jeg undrer mig på, om hun kommer.

Stilted — overly literal 'I wonder whether'.

✅ Mon hun kommer?

I wonder if she'll come?

Key takeaways

Danish replaces all of English's tags with one invariant pair: ikke? after a positive statement, vel? after a negative one. No agreement, no auxiliary copying.
ikke sandt? is a slightly fuller/more formal positive tag; bare ikke? dominates in speech.
To contradict a negative question or tag, answer jo — never ja. To agree with the negative, use nej.
mon marks a question as musing ("I wonder…"); it sits clause-initially (with V2) or inside the adverbial field, and has no one-word English equivalent.

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