Vi ser nappet fra elvebredden.

Because nappet is the definite singular form of the noun napp.

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

• et napp = a bite / a nibble
• nappet = the bite / the nibble

Here, napp is a neuter noun, so the definite ending is -et.

In this context, napp is a noun, not a verb. It often refers to a bite on the fishing line or a small tug / nibble.

So if the sentence is about fishing, nappet means the bite—the moment when a fish tugs at the hook or line.

This is a useful word in fishing-related Norwegian:

• å få napp = to get a bite
• et napp = a bite

Norwegian often combines nouns into compound words, much more freely than English does.

So:

• elv = river
• bredd = bank / shore
• elvebredd = riverbank
• elvebredden = the riverbank

The -e- in elvebredd is a linking element that commonly appears in compounds. You should usually learn compound nouns as complete words rather than trying to translate them word-for-word every time.

For the same reason as nappet has -et: it is definite.

• en elvebredd = a riverbank
• elvebredden = the riverbank

Here, elvebredd is a common-gender noun, so the definite singular ending is -en.

So the sentence uses two definite nouns:

• nappet = the bite
• elvebredden = the riverbank

Because in Norwegian, the definite article is usually attached to the noun itself.

English says:

• the bite
• the riverbank

Norwegian usually says:

• nappet
• elvebredden

This is one of the biggest structural differences from English. In many ordinary sentences, the ending on the noun already means the, so no extra article is needed.

Ser is the present tense of å se (to see).

• å se = to see
• ser = see / sees / am seeing / are seeing, depending on context

Norwegian verbs do not change according to the subject the way English verbs do. So:

• jeg ser = I see
• du ser = you see
• vi ser = we see
• de ser = they see

The verb form stays the same.

Fra usually means from.

So fra elvebredden means from the riverbank.

In this sentence, it most naturally tells us where the seeing happens from—in other words, the people are on the riverbank and they see the bite from there.

So the phrase is functioning like an adverbial of place:

• Vi ser nappet fra elvebredden = We see the bite from the riverbank

Grammatically, a phrase with fra can sometimes attach to different parts of a sentence, so a learner might wonder about that.

But in normal interpretation, fra elvebredden is much more likely to describe where we are seeing from, not the source of nappet. A bite does not naturally come from the riverbank, so context makes the intended meaning clear.

If a speaker wanted to avoid any possible ambiguity, they could rephrase it, for example:

• Fra elvebredden ser vi nappet.

That puts the location first and makes it even clearer that from the riverbank describes ser vi.

Yes. Norwegian word order is flexible in some cases, but it follows clear rules.

The basic order here is:

• Vi ser nappet fra elvebredden.
• subject + verb + object + adverbial

You can also move the adverbial to the front:

• Fra elvebredden ser vi nappet.

When something other than the subject comes first in a main clause, Norwegian uses verb-second word order. That means the finite verb still stays in the second position:

• Fra elvebredden
  • ser
    • vi
      • nappet

So you do not say:

• Fra elvebredden vi ser nappet in a normal main clause

Norwegian present tense is usually formed by adding -r to the infinitive, but some verbs are slightly irregular in spelling.

With å se, the present tense is:

• ser

Other examples:

• å bo → bor
• å leve → lever
• å skrive → skriver

So å se becomes ser, which is the normal present-tense form you need here.

Yes, it is grammatically fine. The most natural context is probably fishing, where nappet means the bite on the line.

Without that context, some learners might find nappet a little unexpected, because it is a more specific word than a general verb like ser noe i vannet. But in a fishing situation, it makes good sense.

So the sentence is natural if the topic is fishing or watching a fishing line/float from the riverbank.