Njóttu stundarinnar.

Njóttu is the singular imperative of the verb njóta.

That means it is a command or encouragement directed at one person, like:

• Enjoy!
• Take pleasure in it!

So in this sentence, the speaker is telling one person to enjoy the moment.

In Icelandic, the subject pronoun is often left out with imperatives, just like in English.

Compare:

• English: Enjoy the moment.
• Icelandic: Njóttu stundarinnar.

The you is understood automatically. If you added þú, it would usually sound unnecessary unless you wanted extra emphasis.

Because several grammatical pieces are packed into one word.

The base noun is stund, a feminine noun meaning moment / while / period of time.
In stundarinnar, you are seeing:

• the noun stund
• in the genitive singular
• with the definite article attached

So stundarinnar literally has the structure of the moment.

Icelandic very often builds this kind of information into the noun ending itself, instead of using separate words like English does.

Because the verb njóta normally takes a genitive object.

This is one of the things English speakers have to get used to in Icelandic: some verbs require a specific case for their object, and it is not always the accusative.

So:

• njóta einhvers = to enjoy something
• literally, the object appears in the genitive

That is why you get:

• stundarinnar
  not
• stundina

Even though in English we would simply say the moment with no visible case marking.

The dictionary form is stund.

Important forms here are:

• stund = a moment / a while
• stundar = of a moment
• stundin = the moment
• stundarinnar = of the moment

So when you look up vocabulary, you would look for stund, not stundarinnar.

This comes from how the imperative is formed.

The verb is njóta, and the singular imperative adds an ending that produces -tu. Since the verb stem already ends in t, the result is written with tt:

• njót-
  • imperative ending
• njóttu

So the double tt is a normal result of the verb’s formation, not a separate word or special particle.

You would use the plural imperative:

• Njótið stundarinnar.

So:

• Njóttu stundarinnar. = said to one person
• Njótið stundarinnar. = said to more than one person

This is a very useful distinction, because Icelandic verbs show number more clearly than English does in commands.

Yes, but this sentence uses the most normal word order.

• Njóttu stundarinnar.

Verb first is exactly what you expect in an imperative. It sounds natural and straightforward.

You might sometimes see unusual word order in poetry, slogans, or for emphasis, but for ordinary learning and everyday use, this is the standard pattern to remember:

• Imperative verb + object

A rough learner-friendly pronunciation is:

• Njóttu ≈ NYOHT-tu
• stundarinnar ≈ STUN-da-rin-nar

A few helpful points:

• nj sounds like ny in canyon
• ó is a long vowel, somewhat like o in go, but not exactly the same as English
• u in Icelandic does not sound exactly like English oo
• the tt is clearly pronounced

If you are aiming for good pronunciation, it helps to learn the sentence as one rhythm group rather than word by word.

It is a natural and idiomatic-sounding phrase.

Njóttu stundarinnar works well as an encouragement, especially in the sense of appreciating the present moment. It sounds like something you could see in speech, writing, or even as a short inspirational line.

So this is not just grammatically correct—it is also a phrase worth remembering as a whole.