Jeg er ikke træt nok til at gå i seng endnu.

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Breakdown of Jeg er ikke træt nok til at gå i seng endnu.

• være: to be
• ikke: not
• endnu: yet

Questions & Answers about Jeg er ikke træt nok til at gå i seng endnu.

Why is it Jeg er ikke træt nok and not Jeg er nok ikke træt?

Both are possible, but they mean different things.

• Jeg er ikke træt nok = I am not tired enough
• Jeg er nok ikke træt = I am probably not tired

So nok has two different uses in Danish:

1. enough

   • after an adjective: træt nok = tired enough

2. probably / presumably

   • often earlier in the sentence: jeg er nok... = I am probably...

In your sentence, nok clearly means enough, so it stays with træt.

Why is ikke placed before træt?

Because in Danish, ikke usually comes before the word or phrase it negates.

Here it negates the idea of being træt nok:

• Jeg er ikke træt nok = I am not tired enough

This is very similar to English structure.

Compare:

• Jeg er træt = I am tired
• Jeg er ikke træt = I am not tired

Then nok is added to the adjective phrase:

• Jeg er ikke træt nok = I am not tired enough

What exactly does nok mean here?