Jakken er pent brukt og ikke flekkete.

In Norwegian, the definite article is often attached to the noun as an ending.

• jakke = jacket
• jakken = the jacket

So -en is the definite ending here.
This is very common in Norwegian:

• bil → bilen = the car
• bok → boka / boken = the book

Because Norwegian usually expresses the by adding a suffix to the noun instead of using a separate word in simple cases.

So instead of something like the jacket, Norwegian says jakken.

A separate word can appear too, but that is mainly with adjectives:

• jakken = the jacket
• den svarte jakken = the black jacket

Because pent is functioning like an adverb here.

The adjective is:

• pen = pretty / nice

But in pent brukt, it does not mean that the jacket itself is pretty. It means it has been used nicely / carefully / well.

Compare:

• Jakken er pen. = The jacket is pretty/nice.
• Jakken er pent brukt. = The jacket has been used carefully / is in nicely used condition.

So pent is not agreeing with jakken here; it is modifying brukt.

Yes. Pent brukt is a very common phrase, especially in ads, second-hand sales, and descriptions of condition.

It usually means something like:

• gently used
• carefully used
• in good used condition

So it is more idiomatic than literal. A learner should understand it as a standard “condition” phrase, not as a word-for-word expression.

Brukt is the past participle of bruke (to use).

• å bruke = to use
• brukt = used

In this sentence, it behaves like part of a description of the jacket’s condition:

• Jakken er brukt. = The jacket is used / has been used.
• Jakken er pent brukt. = The jacket is gently/carefully used.

This is very common in Norwegian: past participles can work a lot like adjectives.

Not really in the way English learners might first think.

Grammatically, er + past participle can sometimes look like a passive, but here the meaning is descriptive, not event-focused. It describes the jacket’s current condition.

So in this sentence, er brukt does not mean something like someone is using the jacket.
It means the jacket is not new and has been used before.

That descriptive meaning is especially clear in pent brukt, which is a standard phrase about condition.

Because ikke is negating that part of the description.

The structure is basically:

• Jakken er pent brukt og (er) ikke flekkete.

In Norwegian main clauses, ikke normally comes after the finite verb:

• Jakken er ikke flekkete.

So when the sentence continues after og, the ikke appears before the adjective it is negating:

• ikke flekkete = not stained / not spotty

It can be repeated, but it does not have to be.

These are both possible:

• Jakken er pent brukt og ikke flekkete.
• Jakken er pent brukt og er ikke flekkete.

The version without the second er is shorter and very natural. Norwegian often leaves out repeated words when the meaning is still clear.

Flekkete means stained, spotty, or marked with spots/stains.

It comes from flekk, which means spot, stain, or mark.

So:

• en flekk = a stain / spot
• flekkete = stained / spotty

In this sentence, ikke flekkete means the jacket does not have visible stains or spots.

Yes. A Norwegian speaker might also say:

• Jakken er pent brukt og uten flekker. = The jacket is gently used and without stains.
• Jakken er pent brukt og har ingen flekker. = The jacket is gently used and has no stains.

But Jakken er pent brukt og ikke flekkete is understandable and natural, especially in a simple product description.

Yes, very much so.

The sentence sounds like something you would read in:

• a second-hand listing
• an online marketplace ad
• a short description of clothing condition

That is why the style is compact and practical. It focuses on two things buyers care about:

• condition from use → pent brukt
• cleanliness / visible marks → ikke flekkete