I og med at skuldersømmen sitter feil, må prøvingen gjentas.

I og med at is a conjunction meaning something like:

• since
• because
• given that
• in view of the fact that

It introduces the reason for what follows.

In this sentence:

• I og med at skuldersømmen sitter feil = Since the shoulder seam is in the wrong position

It is fairly common in written and spoken Norwegian, but it can sound a bit more formal or explanatory than a simple fordi.

Compare:

• Fordi skuldersømmen sitter feil, må prøvingen gjentas.
• I og med at skuldersømmen sitter feil, må prøvingen gjentas.

Both are correct, but i og med at can feel slightly more like given that this is the case.

Norwegian, like English, often makes compound nouns, but Norwegian usually writes them as one word.

So:

• skulder = shoulder
• søm = seam
• skuldersøm = shoulder seam

Then the ending -en is added because the noun is definite singular:

• en skuldersøm = a shoulder seam
• skuldersømmen = the shoulder seam

This is very typical in Norwegian. English often uses separate words where Norwegian prefers compounds.

Because the sentence refers to a specific shoulder seam, not just the general idea of one.

• skuldersøm = shoulder seam / a shoulder seam
• skuldersømmen = the shoulder seam

In context, this is probably about a particular garment being fitted, so the speaker means the shoulder seam on this garment.

Norwegian often uses the definite form where English might still use a more neutral wording depending on context.

This is a very common thing in Norwegian. Sitte is often used more broadly than English sit.

Here, sitter feil means something like:

• is positioned wrong
• is sitting wrong
• is in the wrong place

So skuldersømmen sitter feil means the shoulder seam is not placed correctly on the body or garment.

Norwegian often uses verbs like:

• sitte = be positioned / fit in a sitting way
• stå = stand / be positioned upright
• ligge = lie / be located

These verbs are used much more naturally in Norwegian than in English for objects and placement.

Here feil functions adverbially, describing how the seam sits.

So:

• sitter feil = sits incorrectly / is positioned wrongly

Although feil is also a noun meaning mistake/error, it is very commonly used in expressions like:

• Det er feil. = That is wrong.
• Han svarte feil. = He answered incorrectly.
• Skjorten sitter feil. = The shirt fits/sits wrong.

So in this sentence, feil is best understood as wrong / incorrectly.

This is because Norwegian follows the V2 rule in main clauses: the finite verb must come in the second position.

The sentence begins with the subordinate clause:

• I og med at skuldersømmen sitter feil

After that comes the main clause. Since the subordinate clause counts as the first element, the finite verb must come immediately after it:

• må prøvingen gjentas

So the structure is:

1. I og med at skuldersømmen sitter feil
2. må
3. prøvingen gjentas

If you started with the main clause instead, you would get:

• Prøvingen må gjentas i og med at skuldersømmen sitter feil.

That is also correct.

Prøvingen comes from prøving, which can mean trying, testing, or in clothing contexts often a fitting.

In this sentence, the context is clearly clothing or tailoring, so prøvingen most likely means:

• the fitting
• the try-on session

The ending -en again makes it definite:

• en prøving = a fitting / a trying
• prøvingen = the fitting

So this refers to a specific fitting that has already taken place or is being discussed.

Gjentas is an -s passive form of gjenta.

• å gjenta = to repeat
• gjentas = be repeated

So:

• må prøvingen gjentas = the fitting must be repeated

Norwegian has two common ways to express the passive:

1. -s passive
   • Prøvingen må gjentas.
2. bli-passive
   • Prøvingen må bli gjentatt.

Both are grammatical, but the -s passive is often more compact and common in formal or neutral written Norwegian.

So gjentas is not a different tense; it is just a passive form.

Yes, more or less.

Word-for-word, it is close to:

• må = must
• prøvingen = the fitting
• gjentas = be repeated

So the structure is similar to English must the fitting be repeated, but in normal English this word order would sound like a question. In Norwegian, because of the V2 rule, this is normal declarative word order after the opening clause.

So although the literal order may look question-like to an English speaker, it is just a normal statement in Norwegian.

Because i og med at is a fixed conjunctional expression.

You should learn it as a whole unit:

• i og med at = since / given that

The at introduces the subordinate clause:

• at skuldersømmen sitter feil

This is similar to how some English expressions need a full clause after them, though the exact structure is different.

So it is best not to analyze i og med by itself in this sentence; the full pattern is i og med at + clause.

Yes, absolutely.

You could say:

• Fordi skuldersømmen sitter feil, må prøvingen gjentas.

This means essentially the same thing.

The difference is mostly one of tone:

• fordi = straightforward because
• i og med at = slightly more formal or explanatory, like given that / since

A learner will hear and see fordi very often, so it is a good simpler alternative.

It can suggest both, depending on context.

With clothing and tailoring, sitter often covers ideas that English splits up into several expressions:

• is positioned
• fits
• sits
• falls

So skuldersømmen sitter feil could mean:

• the seam is physically in the wrong place
• the garment fits wrong around the shoulders
• the shoulder line does not align correctly

In tailoring language, this is very natural Norwegian.

Yes:

• I og med at = since / given that
• skuldersømmen = the shoulder seam
• sitter feil = is positioned wrong / sits wrong
• må = must
• prøvingen = the fitting
• gjentas = be repeated

So the full structure is:

• Since the shoulder seam is in the wrong position, the fitting must be repeated.

This is a good example of:

• a reason clause first
• normal Norwegian V2 word order in the main clause
• a compound noun
• an -s passive verb form