Oppgaven er ikke meningsløs.

Oppgaven is the definite singular form of oppgave.

• en oppgave = a task / an assignment / an exercise
• oppgaven = the task / the assignment / the exercise

In Norwegian, definiteness is usually shown by adding an ending to the noun, instead of using a separate word like the in English. So the -en in oppgaven is doing the job of the.

Because Norwegian usually puts definiteness on the noun itself.

So instead of saying something like the task, Norwegian says oppgaven.

This is one of the biggest structural differences from English:

• a task = en oppgave
• the task = oppgaven

You only add an extra demonstrative like den if you mean something more like that task or if a particular structure requires it.

In a normal main clause, Norwegian usually puts the finite verb in second position, and ikke comes after that verb.

So:

• Oppgaven er ikke meningsløs.

Pattern:

• subject + finite verb + ikke
  • rest

This is very common in Norwegian:

• Han kommer ikke. = He is not coming.
• Jeg forstår ikke. = I do not understand.

So er ikke is exactly where you would expect it in a main clause.

Because the adjective agrees with the noun.

Here, oppgaven is singular and non-neuter, so the adjective takes the basic form:

• meningsløs

Compare:

• en oppgave er meningsløs
• et svar er meningsløst
• oppgavene er meningsløse

So in your sentence, meningsløs matches oppgaven correctly.

In Bokmål, many traditionally feminine nouns can be treated either as feminine or as common gender.

So you may see:

• en oppgave / oppgaven
• ei oppgave / oppgava

Both can be correct, depending on style and dialect. In standard Bokmål, en oppgave and oppgaven are very common.

For a learner, it is usually safest to learn:

• en oppgave
• oppgaven

Not exactly.

• ikke meningsløs = not meaningless / not pointless
• meningsfull = meaningful

These are close, but not identical.

Ikke meningsløs is weaker and more cautious. It suggests that the task does have some point or value, but it does not sound as strongly positive as meningsfull.

So:

• Oppgaven er ikke meningsløs. = a fairly mild statement
• Oppgaven er meningsfull. = a stronger, more positive statement

This kind of softer phrasing is also possible in English: It’s not meaningless is not quite the same as It’s meaningful.

Meningsløs can mean several closely related things, depending on context:

• meaningless
• senseless
• pointless

It is built from:

• mening = meaning / sense
• løs = without / lacking

So the word literally has the idea of without meaning or lacking sense.

In this sentence, it most naturally means something like pointless or without value/purpose.

Yes. Oppgave is a broad word.

Depending on context, it can mean:

• task
• assignment
• exercise
• problem
• sometimes even mission or duty

For example:

• in school: assignment or exercise
• at work: task
• in a workbook or exam: question / problem / exercise

So the exact English translation depends on the situation.

In a subordinate clause, ikke usually comes before the verb.

Main clause:

• Oppgaven er ikke meningsløs.

Subordinate clause:

• Jeg tror at oppgaven ikke er meningsløs.
• I think that the task is not meaningless.

So this is an important contrast:

• main clause: er ikke
• subordinate clause: ikke er

That difference is a very common thing for learners to notice in Norwegian word order.