Δεν έχω καμία αντιπάθεια για εκείνον, απλώς δεν τον ξέρω καλά.

In Greek, this is normal. Greek uses negative concord, which means multiple negative words can appear in the same clause without “canceling each other out.”

So:

• Δεν έχω καμία αντιπάθεια = I don’t have any dislike / I have no dislike

Here:

• δεν = not
• καμία = no / any

In English, a double negative is often nonstandard, but in Greek this pattern is completely correct and very common.

Καμία agrees with αντιπάθεια, which is a feminine singular noun.

So:

• καμία = feminine singular form
• αντιπάθεια = feminine singular noun

If the noun were masculine or neuter, the form would change:

• κανέναν for masculine
• κανένα for neuter

So καμία αντιπάθεια means no dislike / no antipathy.

Yes, in many contexts they are basically the same word. The difference is mostly one of spelling/register:

• καμία is often seen as a bit more formal or careful in writing
• καμιά is very common in everyday language

In this sentence, both would be understood:

• Δεν έχω καμία αντιπάθεια...
• Δεν έχω καμιά αντιπάθεια...

Both are natural.

Αντιπάθεια means dislike, aversion, or antipathy.

So the sentence is not saying I hate him. It’s softer than that. It means something like:

• I don’t have anything against him
• I don’t dislike him
• I feel no antipathy toward him

It’s a fairly natural word when talking about your feelings toward a person.

After αντιπάθεια, Greek commonly uses για to mean toward / for someone.

So:

• αντιπάθεια για εκείνον = dislike toward him

This is a normal and idiomatic structure in Greek.

Both can refer to him, but they are not always identical in nuance.

• αυτόν often means simply him
• εκείνον can sound a bit more like that man / that person / him there, and may feel slightly more explicit or contrastive

In many contexts, both are possible, but εκείνον can sound a little more deliberate or detached.

Also, εκείνον is the accusative masculine singular form, which is needed here after για.

Τον is the direct object pronoun meaning him.

So:

• τον ξέρω = I know him

In Greek, when the object is a person, you often use a weak object pronoun like τον.

Here the sentence shifts from the fuller phrase εκείνον to the shorter clitic pronoun τον:

• για εκείνον = about/toward him
• δεν τον ξέρω καλά = I don’t know him well

That is completely normal Greek.

Both verbs can relate to knowing, but they are used a bit differently.

• ξέρω often means know
• γνωρίζω often means know / be acquainted with / meet

In everyday spoken Greek, ξέρω κάποιον καλά is very common for I know someone well.

So:

• δεν τον ξέρω καλά = I don’t know him well

This sounds natural and conversational.

Καλά means well.

So:

• τον ξέρω καλά = I know him well
• δεν τον ξέρω καλά = I don’t know him well

It is the adverb modifying ξέρω.

A learner might expect something like καλώς, but in Modern Greek καλά is the normal everyday word for well in this kind of sentence.

Απλώς means simply, just, or it’s just that.

It softens and clarifies the statement:

• Δεν έχω καμία αντιπάθεια για εκείνον = I have no dislike for him
• απλώς δεν τον ξέρω καλά = I just don’t know him well

So the speaker is correcting a possible misunderstanding: it’s not dislike, it’s only lack of familiarity.

The comma separates two closely connected ideas:

1. I have no dislike toward him
2. I just don’t know him well

Greek punctuation here works much like English. The comma helps show the pause and the explanatory contrast.

Yes, Greek word order is more flexible than English word order.

This sentence could be rearranged for emphasis, for example:

• Καμία αντιπάθεια δεν έχω για εκείνον, απλώς δεν τον ξέρω καλά.
• Δεν τον ξέρω καλά, απλώς δεν έχω καμία αντιπάθεια για εκείνον.
  (possible, though the meaning focus changes)

The original version is very natural and neutral. Changing the order usually changes emphasis, not the basic meaning.

It literally means I don’t know him well, but in context it often implies:

• I’m not close to him
• I’m not familiar enough with him
• I haven’t gotten to know him properly

So the full sentence suggests: I’m not negative toward him; I just don’t know him well enough to have a strong opinion.