Taperen er sliten.

Because -en is the usual definite singular ending for many common-gender Norwegian nouns.

So:

• en taper = a loser
• taperen = the loser

Unlike English, Norwegian often adds definiteness directly to the noun instead of using a separate word like the.

The dictionary form is taper.

You would normally look it up as:

• en taper = a loser
• taperen = the loser
• tapere = losers
• taperne = the losers

In Norwegian, the definite article is often attached to the end of the noun.

So instead of saying something like the loser with a separate article, Norwegian usually says:

• taperen

That ending -en already contains the idea of the.

A separate definite word such as den is used in other structures, especially when an adjective comes before the noun:

• den slitne taperen = the tired loser

Er is the present tense of å være, which means to be.

So:

• jeg er = I am
• du er = you are
• han/hun er = he/she is

In this sentence, er links the subject taperen to the description sliten.

Sliten is the form used here because the subject is singular common gender.

With this adjective, the forms are typically:

• sliten for singular common gender
• slitent for singular neuter
• slitne for plural

Examples:

• Mannen er sliten. = The man is tired.
• Barnet er slitent. = The child is tired.
• Barna er slitne. = The children are tired.

So taperen er sliten matches the grammar of a singular common-gender noun.

No. That is a very common thing to wonder.

Even though taperen is definite, sliten is not using a special definite form here. This is because it is a predicate adjective: it comes after er and describes the subject.

After er, adjectives usually agree with gender and number, not with definiteness in the same way they do before a noun.

Compare:

• taperen er sliten = adjective after er
• den slitne taperen = adjective before the noun

In the second example, slitne is the form used in a definite noun phrase.

The word order is:

• Taperen = subject
• er = verb
• sliten = adjective/complement

So it follows the very common Norwegian pattern:

subject + verb + complement

This is similar to English:

The loser + is + tired

Yes, but it means something different.

• Taperen er sliten. = The loser is tired.
• En taper er sliten. = A loser is tired / One loser is tired

The first refers to a specific loser.
The second introduces a loser more generally or as a new person in the conversation.

Yes. Sliten can mean:

• physically tired
• worn out
• exhausted
• sometimes even worn or shabby when talking about things

For a person, it often means tired or worn out.
So in this sentence, it could suggest simple tiredness or a stronger sense like exhausted, depending on context.

A rough pronunciation guide for English speakers is:

• Taperen ≈ TAH-peh-ren
• er ≈ short air or a reduced ehr
• sliten ≈ SLEE-ten

A few helpful notes:

• The r in Norwegian is usually clearer than in many English accents.
• The i in sliten is a long ee sound.
• Stress is usually on the first syllable: TA-per-en, SLI-ten.

The exact sound depends on dialect, but this approximation is a good start.