Jag vill säga upp abonnemanget.

Yes — säga upp is a particle verb, so it is best learned as a single expression.

In this sentence, säga upp means to cancel, to terminate, or to give notice on something like:

• a subscription
• a contract
• an agreement
• a job

So Jag vill säga upp abonnemanget means that the speaker wants to end that subscription.

A useful thing to remember is that the meaning is not predictable from the basic meaning of säga (to say) plus upp (up). Just as in English phrasal verbs, the combination has its own meaning.

Because vill is a modal verb, and after modal verbs in Swedish, the next verb normally appears in the bare infinitive — without att.

So you say:

• Jag vill säga upp abonnemanget.

Not:

• Jag vill att säga upp abonnemanget.

This is the same pattern you get with other modal verbs:

• Jag kan komma. = I can come.
• Jag måste gå. = I must go.
• Jag ska ringa. = I will / am going to call.

So after vill, just use the infinitive directly: säga upp.

Because abonnemanget is the definite form: the subscription.

In Swedish, definiteness is usually marked by adding an ending to the noun:

• ett abonnemang = a subscription
• abonnemanget = the subscription

In this sentence, the speaker is talking about a specific subscription, so the definite form is natural.

English often uses:

• the subscription
• my subscription

Swedish can do the same idea in different ways:

• Jag vill säga upp abonnemanget. = I want to cancel the subscription.
• Jag vill säga upp mitt abonnemang. = I want to cancel my subscription.

Both are natural, depending on context.

It is an ett word.

So the forms are:

• ett abonnemang = a subscription
• abonnemanget = the subscription

That is why the definite ending is -et, not -en.

This is a good noun to memorize together with its article:

• ett abonnemang

Because the basic structure is:

• Jag = subject
• vill = finite verb
• säga upp = infinitive verb phrase
• abonnemanget = object

So the sentence is built like this:

Jag + vill + säga upp + abonnemanget

After a modal verb like vill, the main action comes as an infinitive. Here that infinitive is the particle verb säga upp.

So the sentence is very literally structured like:

• I
  • want
    • cancel
      • the subscription

This is normal Swedish word order for a main clause.

Yes, absolutely.

Both are natural:

• Jag vill säga upp abonnemanget.
• Jag vill säga upp mitt abonnemang.

The difference is mainly in how specific you want to be:

• abonnemanget = the subscription
• mitt abonnemang = my subscription

In many real-life situations, mitt abonnemang may sound slightly more personal or explicit, especially when speaking to customer service.

No. It is used for several kinds of cancellation or termination.

Common uses include:

• säga upp ett abonnemang = cancel a subscription
• säga upp ett kontrakt = terminate a contract
• säga upp ett avtal = terminate an agreement
• säga upp sig = resign
• säga upp någon = fire / lay someone off

So the exact English translation depends on the object.

That is another reason why säga upp is worth learning as a full expression rather than translating it word by word.

Yes. Depending on context, you may also hear:

• avsluta abonnemanget = end the subscription
• avbryta abonnemanget = interrupt/cancel the subscription

But säga upp abonnemanget is very common and often the most standard choice when talking about formally ending a subscription or agreement.

A rough nuance guide:

• säga upp = terminate/cancel formally
• avsluta = end
• avbryta = cancel/stop, sometimes more like interrupting something

For a subscription, säga upp is an excellent phrase to know.

The most useful forms are:

• infinitive: säga upp = to cancel / terminate
• present: säger upp = cancel / is cancelling
• past: sa upp or sade upp = cancelled
• supine: sagt upp = cancelled (used with har)

Examples:

• Jag säger upp abonnemanget nu. = I am cancelling the subscription now.
• Jag sa upp abonnemanget igår. = I cancelled the subscription yesterday.
• Jag har sagt upp abonnemanget. = I have cancelled the subscription.

Also remember that Swedish present tense does not change by person:

• jag säger upp
• du säger upp
• han/hon säger upp

The form stays the same.

No. Vill means want to, not future will.

So:

• Jag vill säga upp abonnemanget = I want to cancel the subscription

If you said:

• Jag ska säga upp abonnemanget that would mean more like:
• I’m going to cancel the subscription
• I will cancel the subscription

This is a very common point of confusion for English speakers because English will can express future, but Swedish vill is about wanting, not future time.