Et sekund er nok.

Because sekund is a neuter noun in Danish. Danish nouns usually take either en or et in the singular indefinite form:

• en for common gender nouns
• et for neuter nouns

So:

• et sekund = a second

You simply have to learn the noun together with its article.

Sekund here is singular indefinite:

• et sekund = a second
• sekundet = the second
• sekunder = seconds
• sekunderne = the seconds

In this sentence, et sekund means one second / a second.

Because Danish main clauses normally follow V2 word order, which means the finite verb is typically in the second position.

In Et sekund er nok:

1. Et sekund = first element
2. er = finite verb in second position
3. nok = rest of the sentence

This is very normal Danish sentence structure.

Er is the present tense of at være (to be).

So:

• er = is / are / am, depending on context

Here it means is:

• Et sekund er nok = A second is enough

Here, nok means enough or sufficient.

So the sentence means that one second is sufficient.

This is a very common use of nok after være:

• Det er nok = That is enough
• En dag er nok = One day is enough

No. Nok can also mean probably / presumably / I suppose, depending on context.

For example:

• Det er nok rigtigt = That is probably true
• Han kommer nok senere = He’ll probably come later

But in Et sekund er nok, it clearly means enough, because it follows er and describes sufficiency.

Yes, sometimes ét is written with an acute accent to emphasize the number one.

• Et sekund er nok = normal spelling
• Ét sekund er nok = One second is enough, with extra emphasis on one

The accent is not required in ordinary writing, but it can be used when the writer wants to stress the number.

Danish often does not need a separate word if the idea is already clear from context.

Et sekund er nok already naturally suggests:

• A second is enough
• Just one second is enough
• Only a second is enough

If you wanted stronger emphasis, you could add words, but the basic sentence works perfectly without them.

Yes, sekund is completely normal, especially when talking about exact time.

Examples:

• Vent et sekund = Wait a second
• Det tager kun et sekund = It only takes a second

In more casual speech, Danish speakers may also use øjeblik in some situations:

• Vent et øjeblik = Wait a moment

But sekund is still very common and natural.

A rough guide is:

• Et ≈ ed or a very soft et
• sekund ≈ seh-KOON or seh-GOON depending on speech and accent
• er is often pronounced very weakly, almost like a
• nok ≈ nok with a short vowel

In connected speech, Danish pronunciation is much softer and more reduced than the spelling suggests, especially et and er.

Yes. It sounds like a complete and natural sentence, especially in context.

For example:

• someone asks how much time is needed
• someone says they only need a very short time
• someone reassures another person that the wait will be brief

So Et sekund er nok is a normal standalone statement meaning that one second is sufficient.

Yes.

• Et sekund! usually means One second! / Wait a second!
• Et sekund er nok means A second is enough

So the short exclamation is often a request for time, while the full sentence is a statement about what amount of time is sufficient.