Me extraña su silencio.

Because extrañar here does not mean to miss. In this sentence it means to surprise, to seem strange, or to puzzle.

So the structure works like gustar in some ways:

• Me extraña su silencio = His/Her silence surprises me / I find his/her silence strange

Grammatically:

• su silencio = the thing causing the reaction
• me = the person affected by it

If you said yo extraño, that would normally mean I miss..., as in:

• Extraño a mi familia = I miss my family

So the meaning changes completely depending on how the verb is being used.

Me is an indirect object pronoun. It means to me.

So a very literal breakdown is:

• su silencio = his/her silence
• me = to me
• extraña = is strange / is surprising

Very literally: His/Her silence is strange to me.

That is why the sentence is often translated more naturally as:

• His/Her silence surprises me
• I find his/her silence strange

Because the subject is su silencio, and silencio is singular.

In Spanish, the verb agrees with the subject, not with me.

• su silencio → singular → extraña
• sus silencios → plural → extrañan

For example:

• Me extraña su silencio = His/Her silence surprises me
• Me extrañan sus silencios = His/Her silences surprise me

The subject is su silencio.

This can feel confusing to English speakers because in English we often say:

• I find his silence strange

That makes I look like the main subject.

But in Spanish, this sentence is built more like:

• His silence surprises me

So:

• su silencio = subject
• me = indirect object
• extraña = verb

Yes. That is a very important point.

Extrañar can mean:

1. to miss

   • Extraño a mis amigos = I miss my friends

2. to surprise / to seem strange

   • Me extraña su actitud = His/Her attitude surprises me
   • Me extraña que no haya llamado = I’m surprised that he/she hasn’t called

In Spain, learners will often also hear echar de menos for to miss:

• Echo de menos a mis amigos = I miss my friends

So in this sentence, extrañar is clearly the surprise / seem strange meaning.

Yes. Su silencio me extraña is grammatically correct.

Spanish allows more flexibility in word order than English. Both mean the same thing:

• Me extraña su silencio
• Su silencio me extraña

Starting with me extraña often puts a little more focus on the speaker’s reaction:

• It surprises me, his/her silence

This kind of order is very common in Spanish.

On its own, su can mean several things:

• his
• her
• your (formal singular)
• their

So su silencio could mean:

• his silence
• her silence
• your silence
• their silence

You need the wider context to know which one is intended.

If Spanish speakers want to make it clearer, they can add more information:

• Me extraña el silencio de Juan
• Me extraña su silencio, el de María

Because Spanish often uses a possessive instead of an article when talking about someone’s body parts, qualities, actions, or things associated with them.

Here, su silencio means his/her silence, so the possessive already identifies it.

You could say el silencio de él / de ella, but that is usually less natural unless you want emphasis or clarification.

So:

• su silencio = normal and natural
• el silencio de él/ella = possible, but more explicit or emphatic

Yes, often very similar.

• Me extraña su silencio = His/Her silence surprises me / seems strange to me
• Me sorprende su silencio = His/Her silence surprises me

But there is often a slight nuance:

• sorprender focuses more on surprise
• extrañar often suggests surprise plus strangeness: something feels odd, unexpected, or not normal

So me extraña can carry the idea:

• I find it odd
• It strikes me as strange
• It surprises me

Yes, but it is a different structure.

• Me extraña su silencio = His/Her silence surprises me / seems strange to me
• Estoy extrañado por su silencio = I am surprised / puzzled by his/her silence

The original sentence is usually more natural and idiomatic for this idea.

Also, in everyday Spanish, people may prefer forms like:

• Me extraña su silencio
• Su silencio me parece extraño
• Me sorprende su silencio

You just change the object pronoun:

• Me extraña su silencio = His/Her silence surprises me
• Te extraña su silencio = His/Her silence surprises you
• Le extraña su silencio = His/Her silence surprises him/her
• Nos extraña su silencio = His/Her silence surprises us
• Os extraña su silencio = His/Her silence surprises you all (used in Spain)
• Les extraña su silencio = His/Her silence surprises them / you all

Notice that the verb stays singular because su silencio is still singular.

No, not in this form.

If you want to say I miss his/her silence, you would normally say:

• Extraño su silencio
• In Spain, more commonly: Echo de menos su silencio

That is different from:

• Me extraña su silencio = His/Her silence surprises me / seems strange to me

So the little word me changes the structure and meaning a lot.

Yes, definitely. It is part of a very useful pattern where the thing causing a feeling or reaction is the subject, and the person experiencing it is shown with an object pronoun.

Common examples:

• Me gusta la música = I like music
• Me preocupa su salud = His/Her health worries me
• Me molesta el ruido = The noise bothers me
• Me sorprende su respuesta = His/Her answer surprises me
• Me extraña su silencio = His/Her silence seems strange to me

Learning this pattern helps Spanish feel much more natural.