Vi avviser kompromisset og begrunner beslutningen.

Because vi is the subject of both verbs.

The sentence structure is:

• Vi = subject
• avviser kompromisset = first verb phrase
• og
• begrunner beslutningen = second verb phrase

In Norwegian, just like in English, you do not need to repeat the subject if the same subject continues after og.

So this is like saying:

• We reject the compromise and justify the decision.

You could repeat vi, but it would usually sound unnecessary here.

They are both present tense verb forms.

• å avvise = to reject
• å begrunne = to justify, give reasons for

Present tense in Norwegian is often made by adding -r to the infinitive:

• avvise → avviser
• begrunne → begrunner

So:

• vi avviser = we reject / we are rejecting
• vi begrunner = we justify / we are justifying

Norwegian present tense can often cover both simple present and present progressive meanings from English, depending on context.

Because they are in the definite form.

In Norwegian, definiteness is usually added to the end of the noun:

• et kompromiss = a compromise

• kompromisset = the compromise

• en beslutning = a decision
• beslutningen = the decision

This is one of the biggest differences from English. Instead of putting the before the noun, Norwegian usually puts the definite marker on the noun itself.

So:

• kompromisset = the compromise
• beslutningen = the decision

Because the two nouns have different grammatical genders.

• et kompromiss is neuter
• en beslutning is common gender

In the singular definite form:

• neuter nouns often take -et
• common gender nouns often take -en

So:

• et kompromiss → kompromisset
• en beslutning → beslutningen

This is completely normal in Norwegian and is something learners need to memorize together with the noun.

The sentence follows a very standard Norwegian main-clause pattern:

• Vi = subject
• avviser = verb
• kompromisset = object
• og = and
• begrunner = verb
• beslutningen = object

So the structure is basically:

Subject + Verb + Object + and + Verb + Object

This is very close to normal English word order, which makes this sentence fairly straightforward for English speakers.

Usually justify the decision or give reasons for the decision.

The verb å begrunne is about providing grounds, reasons, or justification. It is often used in formal, administrative, legal, or academic language.

Depending on context, English translations could include:

• justify the decision
• give reasons for the decision
• explain the reasoning behind the decision

But justify is often the most direct match in a sentence like this.

It sounds fairly formal or official.

Both verbs, especially begrunner, are common in:

• administrative writing
• politics
• formal statements
• reports
• official decisions

A more everyday way of speaking might use simpler wording depending on context, but this sentence is perfectly natural Norwegian. It just has a somewhat formal tone.

Because Norwegian normally does not use a comma before og when it simply joins two coordinated parts of a sentence.

Here, og connects two verb phrases with the same subject:

• avviser kompromisset
• begrunner beslutningen

So no comma is needed.

This is similar to normal English usage in a short sentence like this.

The dictionary forms are:

• vi = we
• å avvise = to reject
• et kompromiss = a compromise
• og = and
• å begrunne = to justify / give reasons for
• en beslutning = a decision

When learning Norwegian, it helps to memorize nouns together with their article:

• et kompromiss
• en beslutning

That makes it easier to form the definite versions correctly later.

Yes.

Norwegian present tense is flexible. It can mean:

• something happening now
• something generally true
• something habitual
• something stated in a formal timeless way

So Vi avviser kompromisset og begrunner beslutningen could mean:

• we are rejecting the compromise and justifying the decision
• we reject the compromise and justify the decision

The exact time sense depends on context.

A rough pronunciation guide:

• Vi ≈ vee
• avviser ≈ AHV-vee-ser
• kompromisset ≈ kom-pro-MISS-et
• og is often pronounced more like å in connected speech
• begrunner ≈ beh-GRUN-ner
• beslutningen ≈ beh-SLOOT-ning-en

A few useful notes:

• The r sound in Norwegian varies by dialect.
• Unstressed endings like -et, -en, and -er are often pronounced more lightly than an English speaker might expect.
• In natural speech, the sentence will often flow together quite smoothly.

Not if you mean the compromise and the decision.

Without the endings, you would have:

• kompromiss = compromise
• beslutning = decision

That would sound incomplete or unnatural in this sentence unless you changed the structure and meaning.

The sentence you have uses specific, definite nouns:

• kompromisset = the compromise
• beslutningen = the decision

So the endings are important here.