Returpunktet er utenfor.

Because returpunktet is the definite singular form of the noun returpunkt.

In Norwegian, the definite article is usually attached to the end of the noun instead of being a separate word like the in English.

• et returpunkt = a return point
• returpunktet = the return point

The ending -et shows that the noun is:

• singular
• definite
• neuter

Norwegian usually puts definiteness on the noun itself.

So instead of saying something like the return point, Norwegian says returpunktet, where the ending already includes the idea of the.

This is very common in Norwegian:

• en bil = a car

• bilen = the car

• et hus = a house
• huset = the house

So returpunktet already means the return point, and no extra word is needed.

It is a compound noun, which is extremely common in Norwegian.

It is made from:

• retur = return
• punkt = point

Together, returpunkt means something like return point.

Norwegian often joins words together into one noun where English may also use a compound or a phrase.

Returpunkt is a neuter noun.

You can tell from the forms:

• et returpunkt = an indefinite singular neuter noun
• returpunktet = the definite singular neuter form

The definite ending -et is a strong clue that the noun is neuter.

Norwegian follows a verb-second pattern in main clauses. That means the finite verb usually comes in position two.

In this sentence:

• Returpunktet = first element
• er = second element
• utenfor = rest of the sentence

So Returpunktet er utenfor has normal Norwegian word order.

This same rule appears in many sentences:

• Han kommer i morgen.
• I morgen kommer han.

Even when something else comes first, the verb still usually stays in second position.

Here, utenfor is being used adverbially, meaning outside.

It can also be used as a preposition when it has an object after it:

• utenfor huset = outside the house
• utenfor byen = outside the city

But in Returpunktet er utenfor, there is no noun after it, so it works more like the English adverb outside.

Yes, depending on context, utenfor can refer to being physically outside something or simply being outdoors.

For example:

• Han står utenfor huset. = He is standing outside the house.
• Barna er utenfor. = The children are outside / outdoors.

In your sentence, the exact nuance depends on context. It could mean outside in relation to a place, area, building, or boundary.

Yes, it is grammatically natural, though returpunktet is a somewhat specific or technical-sounding noun.

The sentence sounds like something you might see in:

• instructions
• a game
• a map
• logistics or transport
• a technical system

So the grammar is completely normal, even if the noun itself belongs to a more specific context.

Sometimes yes, but not always.

• utenfor usually means outside in relation to a place, boundary, or building
• på utsiden means more literally on the outside or on the outer side

So:

• Returpunktet er utenfor = the return point is outside
• Returpunktet er på utsiden = the return point is on the outside

The second version may sound more physical or contrastive, as if something has an inside and an outside surface or side. In many ordinary situations, utenfor is the more natural choice.

You would usually put ikke after the verb:

• Returpunktet er ikke utenfor.

That means the return point is not outside.

This is the normal placement of ikke in a simple main clause:

• subject + verb + ikke

In a yes/no question, Norwegian usually puts the verb first:

• Er returpunktet utenfor?

That means Is the return point outside?

This is a very common pattern:

• Han er her. → Er han her?
• Huset er stort. → Er huset stort?

A helpful learner-level approximation is:

reh-TUUR-pungk-teh

A few things to notice:

• retur has stress on the second syllable
• punkt has a clear k/t cluster at the end
• the final -et is usually pronounced lightly, not strongly emphasized

Exact pronunciation varies a bit by dialect, but the most important thing is to keep the stress natural and not pronounce every syllable too heavily.