Vänta ett ögonblick.

Vänta is the imperative form of the verb vänta, meaning to wait.

In Swedish, the imperative is often the same as the basic dictionary form for many verbs:

• att vänta = to wait
• vänta! = wait!

So Vänta ett ögonblick. is a direct instruction: Wait a moment.

Because ögonblick is an ett-word in Swedish. Swedish nouns have two grammatical genders in modern usage:

• en-words
• ett-words

Since ögonblick is an ett-word, its indefinite singular article is ett:

• ett ögonblick = a moment

This is something you usually need to learn together with the noun:

• ett ögonblick
• en minut
• en sekund

Ögonblick is a noun meaning moment or instant.

It is historically connected to the idea of the blink of an eye:

• ögon relates to eyes
• blick can relate to glance/look

But in modern Swedish, you should mostly just learn ett ögonblick as the normal word for a moment.

Because Swedish uses vänta differently from English in this kind of expression.

In English, you often say:

• Wait a moment
• Wait for a moment

In Swedish, you simply say:

• Vänta ett ögonblick

No extra word like for is needed here. That is just the normal Swedish structure.

Yes. It is a complete sentence in the imperative.

The subject you is understood, just like in English commands:

• Sit down.
• Listen.
• Wait a moment.

Swedish works the same way:

• Vänta ett ögonblick.

So even though there is no written subject, the sentence is fully complete.

A rough pronunciation guide is:

VEN-ta et UH-gon-blik

A few details:

• ä in vänta sounds somewhat like the e in bed, though not exactly the same.
• ett is short and clipped.
• ö is a Swedish vowel that does not exist exactly in English. It is somewhat similar to the vowel in some pronunciations of French peu or German schön.
• blick has a short i, like the i in bit.

If you want to sound natural, focus on the rhythm: VÄN-ta ett Ö-gon-blick

By itself, Vänta ett ögonblick. is natural and common, but it can sound fairly direct because it is an imperative.

Depending on tone and situation, it can be:

• perfectly normal
• neutral
• a bit abrupt

If you want to sound softer or more polite, Swedish often adds extra words such as:

• Vänta ett ögonblick, tack. = Wait a moment, please.
• Kan du vänta ett ögonblick? = Can you wait a moment?
• Vänta lite. = Wait a bit.

So the sentence is not rude by default, but politeness often depends on context and tone of voice.

No. It must be ett ögonblick, because ögonblick is an ett-word.

So these are correct:

• ett ögonblick
• vänta ett ögonblick

And this is incorrect:

• en ögonblick

Yes. Just like English a historically relates to one, Swedish ett can function as:

• the indefinite article a/an
• the number one

In Vänta ett ögonblick, it is normally understood as the article a:

• Wait a moment

But the form is the same as the number one. Context tells you which meaning is intended.

Yes. Swedish has several very common alternatives, depending on tone and situation:

• Vänta lite. = Wait a bit.
• Ett ögonblick. = One moment.
• Vänta en stund. = Wait a while / Wait a moment.
• Dröj ett ögonblick. = Wait a moment.
  This is more formal or literary.

In everyday speech, Vänta lite and Ett ögonblick are extremely common.

Because att is the infinitive marker, like to in English.

• att vänta = to wait
• vänta! = wait!

Since this sentence is a command, Swedish uses the imperative, not the infinitive. So att is not used.

Vänta! is still correct. It simply means Wait!

Adding ett ögonblick makes it more specific:

• Vänta! = Wait!
• Vänta ett ögonblick. = Wait a moment.

So the longer sentence sounds a little softer or more precise than the short command Vänta!