Δεν τον γνωρίζω καλά.

Τον means him. It is a weak object pronoun, often called a clitic, and it stands for the person being known.

So in Δεν τον γνωρίζω καλά, the structure is:

• Δεν = not
• τον = him
• γνωρίζω = I know / I am acquainted with
• καλά = well

Greek usually uses this short pronoun before the verb, where English would often put him after the verb.

In Greek, weak object pronouns like τον, την, το, με, σε normally come before a finite verb.

So Greek says:

• τον γνωρίζω = I know him

not:

• γνωρίζω τον ❌

This is one of the most important word-order differences from English. English says I know him; Greek usually says the equivalent of I him know.

Δεν is the normal negative particle used with indicative verb forms, including the present tense.

So:

• γνωρίζω = I know
• δεν γνωρίζω = I do not know

In this sentence, δεν negates the whole verb phrase:

• Δεν τον γνωρίζω καλά = I don’t know him well

A useful contrast is that μη(ν) is used in other environments, such as commands or subjunctive structures, not here.

Γνωρίζω is present tense, first person singular: I know / I am acquainted with.

In a sentence like this, the present tense expresses a current state:

• Τον γνωρίζω = I know him
• Δεν τον γνωρίζω καλά = I don’t know him well

Greek present tense can cover meanings that English may express as simple present, depending on context.

Both verbs can relate to knowing, but they are not always used in exactly the same way.

• γνωρίζω often means to know someone, to be acquainted with, to be familiar with
• ξέρω often means to know a fact, to know how, to be aware

So for a person, γνωρίζω is very natural:

• Τον γνωρίζω καλά = I know him well / I know him quite well

You may also hear Δεν τον ξέρω καλά, which is common in everyday speech and often means almost the same thing. But γνωρίζω more clearly emphasizes acquaintance or familiarity with a person.

Here καλά means well.

It modifies the verb γνωρίζω, so it tells you how well the speaker knows him:

• τον γνωρίζω καλά = I know him well

This is the adverb form. It does not mean good here; it means well.

Greek often places adverbs like καλά after the verb phrase, and this sounds completely natural:

• Δεν τον γνωρίζω καλά

This is the most neutral word order.

Greek word order is somewhat flexible, but different orders can sound marked or emphasize something. The given order is the normal, everyday way to say it.

No. That is not correct.

The weak pronoun τον normally comes before the verb:

• Δεν τον γνωρίζω καλά ✅

not:

• Δεν γνωρίζω καλά τον ❌

If you wanted to place the full noun after the verb, that would be different:

• Δεν γνωρίζω καλά τον Γιάννη = I don’t know Giannis well

But the short pronoun τον itself does not go there in normal usage.

Usually not if him is important information and has not already been clearly replaced by something else in the sentence.

Greek often drops subject pronouns because the verb ending shows the subject, but object pronouns like τον are not normally omitted if you need them.

So:

• Δεν γνωρίζω καλά by itself means I don’t know well or I’m not very familiar, but it no longer clearly says him.

To say I don’t know him well, you normally keep τον.

Τον is in the accusative case because it is the direct object of the verb.

The person being known is the thing/person directly affected by the verb:

• γνωρίζω ποιον; = I know whom?
• τον = him

So Greek uses the masculine singular accusative pronoun τον.

It is neutral and natural in both speech and writing.

• γνωρίζω can sound a little more careful or slightly more formal than ξέρω in some contexts
• but Δεν τον γνωρίζω καλά is still a very normal everyday sentence

A very common spoken alternative is:

• Δεν τον ξέρω καλά

Both are useful to learn.

If you want extra emphasis, Greek can use the strong pronoun αυτόν alongside the clitic:

• Δεν τον γνωρίζω καλά αυτόν
• more naturally for contrast: Αυτόν δεν τον γνωρίζω καλά

This would sound like:

• Him, I don’t know well
• or That person, I don’t know well

Without special emphasis, the simple sentence is best:

• Δεν τον γνωρίζω καλά

A rough pronunciation is ghno-REE-zo.

A few helpful points:

• γν at the beginning may feel unusual to English speakers
• ζ sounds like z
• the stress falls on ρί: γνωρίζω

A rough transliteration is:

• Dhen ton ghno-REE-zo ka-LA

The stress in the full sentence is on:

• Δεν τον γνωρίζω καλά
• γνωρίζω, καλά