Hun mistenker en feil.

Hun is the subject form of she. It is used because this is the person doing the action.

• Hun mistenker en feil. = She suspects a mistake/error.
• Henne is the object form, like her in English.

For example:

• Jeg ser henne. = I see her.
• Hun ser meg. = She sees me.

So in this sentence, hun is correct because she is the one who is suspecting something.

Mistenker is the present tense of the verb å mistenke.

A few useful forms are:

• å mistenke = to suspect
• mistenker = suspect / suspects
• mistenkte = suspected
• har mistenkt = have/has suspected

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

• jeg mistenker
• du mistenker
• hun mistenker
• vi mistenker

The verb form stays the same.

En is the indefinite article for many Norwegian nouns, similar to a/an in English.

• en feil = a mistake / an error

Norwegian nouns have grammatical gender, and feil is usually treated as a common-gender noun, so it takes en in the indefinite singular:

• en feil
• feilen = the mistake/error

So en is there because the sentence refers to one unspecified error.

In modern Norwegian Bokmål, feil is normally a common-gender noun, so it takes en:

• en feil
• feilen

In practice, that is the form learners should use.

Also, feil is a very common word and can function in more than one way in Norwegian, which can be confusing:

• as a noun: en feil = a mistake, an error
• in some expressions almost like an adjective/adverb: Det er feil. = That is wrong.

But in Hun mistenker en feil, it is clearly a noun.

It uses the normal Norwegian main clause word order:

subject + verb + object

• Hun = subject
• mistenker = verb
• en feil = object

So:

• Hun mistenker en feil.

This is the most neutral and standard order in a simple statement.

Norwegian main clauses usually keep the verb in the second position, but when the sentence starts with the subject, it looks very similar to English.

No, that would sound wrong in ordinary Norwegian.

In a normal statement, the object usually comes after the verb:

• Hun mistenker en feil.

Norwegian does allow other word orders in special cases for style, emphasis, or poetry, but Hun en feil mistenker is not natural standard Norwegian.

So for learners, the safe pattern is:

subject + verb + object

Mostly yes, but there are a few things to notice.

In this sentence, mistenke takes a direct object:

• mistenke en feil = suspect an error
• mistenke noen = suspect someone

It can also be followed by a clause:

• Hun mistenker at noe er galt. = She suspects that something is wrong.

So it behaves a lot like English suspect, but learners should pay attention to what comes after it:

• a noun phrase: en feil
• or a clause: at ...

It can mean any of those depending on context.

Feil is a broad Norwegian word that can cover:

• mistake
• error
• fault
• something wrong

So Hun mistenker en feil could fit situations like:

• someone thinks there is a mistake in a document
• someone suspects an error in a calculation
• someone thinks there is a fault in a system

The exact English choice depends on context, even though the Norwegian stays the same.

You usually put ikke after the verb in a simple main clause:

• Hun mistenker ikke en feil.

That means She does not suspect an error/mistake.

This placement is very important in Norwegian:

• Hun mistenker ikke ...

not

• Hun ikke mistenker ...

So in many basic sentences, ikke comes after the finite verb.

In a yes/no question, Norwegian usually puts the verb first:

• Mistenker hun en feil? = Does she suspect an error?

This is a very common pattern:

• statement: Hun mistenker en feil.
• question: Mistenker hun en feil?

So Norwegian often forms questions by switching the order of the subject and the finite verb.

A simple learner-friendly approximation is:

mi-STEN-ker

A few pronunciation tips:

• the stress is on the second syllable
• the r is pronounced in the Norwegian way, which varies by region
• the final -er is usually a light ending, not strongly pronounced like English air

If you want a rough English-style guide, something like mih-STEN-ker is closer than reading every letter in a very English way.

The exact pronunciation depends somewhat on dialect, but the spelling-to-sound relationship is fairly regular here.

Usually, Hun mistenker en feil is the normal choice if you mean one unspecified error/mistake.

If you say Hun mistenker feil, it sounds less natural in this context unless you mean something more general, like errors as a category or in a special expression. In most ordinary cases, you want the noun phrase:

• en feil

So for learners, the best default is:

• Hun mistenker en feil.

The definite singular is:

• feilen = the mistake / the error

So you get:

• en feil = a mistake/an error
• feilen = the mistake/the error

Examples:

• Hun mistenker en feil.
• Hun mistenker feilen ligger i systemet. is not correct as written, because after mistenker you would normally need a clause marker:
  Hun mistenker at feilen ligger i systemet.

A simpler example is:

• Hun fant feilen. = She found the error.

This is a useful pattern in Norwegian: the definite article is often added to the end of the noun.