Kimse onu konuşmaya zorlamadı.

A word-by-word breakdown is:

• kimse = no one / nobody / anyone
• onu = him / her / it (the direct object form of o)
• konuşmaya = to speak / into speaking / to talking
• zorlamadı = did not force

So the whole sentence means something like:

• No one forced him/her to speak.

A more literal sense is:

• No one forced him/her into speaking.

In Turkish, this is normal and correct.

Kimse often works together with a negative verb to mean no one:

• Kimse gelmedi. = No one came.
• Kimse onu konuşmaya zorlamadı. = No one forced him/her to speak.

So although English usually avoids this kind of structure, Turkish commonly uses:

• kimse
  • negative verb

This is not considered bad grammar or an illogical double negative in Turkish. It is the standard pattern.

Onu is the accusative form of o.

• o = he / she / it
• onu = him / her / it as a direct object

In this sentence, onu is the person being forced:

• Kimse onu konuşmaya zorlamadı.
• No one forced him/her to speak.

Turkish does not mark gender in pronouns the way English does, so onu could mean:

• him
• her
• sometimes it, depending on context

You only know which one it is from the situation.

Because it is the verb konuşmak turned into a verbal noun and then put into the dative case.

Here is the formation:

• konuşmak = to speak
• remove -k and get the stem used for this structure: konuşma
• add dative -ya → konuşmaya

So:

• konuşmaya = to speaking / to speak

After zorlamak (to force), Turkish often uses this pattern:

• birini + verb-(y)A + zorlamak

Examples:

• Onu gitmeye zorladı. = He/She forced him/her to go.
• Beni beklemeye zorladı. = He/She forced me to wait.

So konuşmaya zorlamak means to force someone to speak.

No. Here konuşma is not negative.

This is a very common point of confusion, because -ma/-me can be:

1. a negative suffix
   
   • konuşma! = don’t speak!
2. a verbal noun / infinitive-like form
   
   • konuşma = speaking

In konuşmaya zorlamak, it is the second one: a verbal noun.

So this sentence does not mean forced him/her not to speak.
It means forced him/her to speak.

If you wanted forced him/her not to speak, Turkish would be different, for example:

• Onu konuşmamaya zorladı.

That has an extra negative meaning inside the verb phrase.

It comes from the verb zorlamak = to force.

Breakdown:

• zorla- = verb stem
• -ma- = negation
• -dı = past tense
• third person singular has no extra ending here

So:

• zorlamadı = did not force

Examples:

• Zorladı. = He/She forced.
• Zorlamadı. = He/She did not force.

In your sentence, the subject is kimse, so the meaning becomes:

• No one did not force is not the right way to think about it in English.
• The natural translation is simply No one forced him/her to speak.

Because in Turkish, third person singular often has no visible personal ending in the past tense.

Compare:

• zorladım = I forced
• zorladın = you forced
• zorladı = he/she/it forced

And negative:

• zorlamadım = I did not force
• zorlamadın = you did not force
• zorlamadı = he/she/it did not force

Here the subject is kimse, and that behaves as singular:

• Kimse ... zorlamadı.

Yes, Turkish word order is flexible, but this version is very natural.

The basic order here is:

• Subject: kimse
• Object: onu
• verb complement: konuşmaya
• Verb: zorlamadı

Turkish often puts the main verb at the end.

You could change the order for emphasis, for example:

• Onu konuşmaya kimse zorlamadı.
  = No one forced him/her to speak.
  This can emphasize kimse.

• Kimse konuşmaya onu zorlamadı.
  Possible, but less neutral in many contexts.

The original sentence is a straightforward, neutral way to say it.

Because onu is the direct object, and it is definite/specific.

In Turkish, definite direct objects usually take the accusative case:

• o → onu

Here, onu refers to a specific person, so the accusative is expected.

Kimse is the subject, so it does not take accusative marking.

Not always. It can also mean anyone, depending on the sentence.

With a negative verb:

• Kimse gelmedi. = No one came.
• Kimse onu konuşmaya zorlamadı. = No one forced him/her to speak.

In questions or certain other contexts:

• Burada kimse var mı? = Is anyone here?
• Kimse bir şey söyledi mi? = Did anyone say anything?

So kimse does not have one fixed English translation in every sentence. Context matters.

Yes. That is a very natural English translation.

Possible translations include:

• No one forced him/her to speak.
• Nobody forced him/her to talk.
• Nobody made him/her talk.

The Turkish sentence does not strongly distinguish between speak and talk here. Which English version sounds best depends on context.

A very useful pattern is:

• birini + verb-(y)A + zorlamak

That means:

• to force someone to do something

Examples:

• Beni gitmeye zorladı.
  = He/She forced me to go.

• Onları beklemeye zorladı.
  = He/She forced them to wait.

• Kimse onu konuşmaya zorlamadı.
  = No one forced him/her to speak.

So if you learn this as a pattern, the sentence becomes much easier to understand.

You would change onu to beni:

• Kimse beni konuşmaya zorlamadı.

Other possibilities:

• Kimse seni konuşmaya zorlamadı. = No one forced you to speak.
• Kimse bizi konuşmaya zorlamadı. = No one forced us to speak.

The rest of the sentence stays the same.

You would remove the negative idea and use a positive subject and verb:

• Biri onu konuşmaya zorladı.
  = Someone forced him/her to speak.

Or:

• Birisi onu konuşmaya zorladı.

Compare:

• Kimse onu konuşmaya zorlamadı. = No one forced him/her to speak.
• Biri onu konuşmaya zorladı. = Someone forced him/her to speak.

This contrast helps show clearly that:

• kimse
  • negative verb = no one
• biri / birisi
  • positive verb = someone