Δεν βρίσκω το άλλο αθλητικό μου.

Βρίσκω means I find or I am finding. With δεν, it becomes I can’t find / I’m not finding.

In this sentence, Δεν βρίσκω... is the natural Greek way to say that you are unable to locate something right now.

• βρίσκω = I find
• δεν βρίσκω = I can’t find / I’m not finding

Greek often uses the simple present where English might prefer can’t find.

Both δεν and δε are used before verbs, and both mean not.

• δεν is the full form
• δε is a shortened form often used before a consonant

Since βρίσκω begins with a consonant sound, both are possible:

• Δεν βρίσκω
• Δε βρίσκω

Δεν βρίσκω is perfectly standard and slightly more neutral in writing.

Because it is the direct object of the verb βρίσκω.

You are finding what?
→ το άλλο αθλητικό μου

So Greek uses the accusative form here.

In neuter singular, the article is:

• nominative: το
• accusative: το

So the form does not change visibly, but grammatically it is accusative.

Here αθλητικό is neuter singular, so it takes the neuter singular article το.

In everyday Greek, το αθλητικό can mean the sneaker / the sports shoe. It is basically an adjective being used like a noun.

So:

• αθλητικός / αθλητική / αθλητικό = athletic, sporty
• το αθλητικό = the athletic shoe, the sneaker

That is why the sentence has το άλλο αθλητικό μου.

It is very common in Greek for an adjective to be used on its own as a noun when the meaning is clear from context.

So το αθλητικό is short for something like:

• το αθλητικό παπούτσι = the sports shoe / sneaker

But in everyday speech, Greek speakers usually just say το αθλητικό.

This is similar to English expressions like the rich, the poor, or the red one, where an adjective stands in for a fuller noun phrase.

Άλλο means other.

In this sentence, it refers to the other one, usually the matching one in a pair. So if we are talking about shoes, it means:

• the other sneaker
• in natural English: my other shoe / my other sneaker

It agrees with αθλητικό, so it is also neuter singular:

• άλλος = masculine
• άλλη = feminine
• άλλο = neuter

Because άλλο means the other one, while δεύτερο means the second one.

In a sentence like this, Greek normally uses άλλο when talking about the matching item of a pair:

• το άλλο αθλητικό μου = my other sneaker

If you said το δεύτερο αθλητικό μου, it would sound more like you are counting them as item 1 and item 2, rather than talking about the missing partner.

Μου means my here.

Greek often uses the weak genitive pronoun μου after the noun phrase to show possession:

• το αθλητικό μου = my sneaker

So:

• το άλλο αθλητικό μου = my other sneaker

This is a very common way to express possession in Greek.

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

These are all possible, though not always identical in emphasis:

• το άλλο αθλητικό μου
• το άλλο μου αθλητικό

Both can mean my other sneaker.

Very roughly:

• το άλλο αθλητικό μου sounds like a straightforward neutral phrase
• το άλλο μου αθλητικό can put a little more emphasis on my

In everyday speech, both are understandable and natural.

Greek often expresses this idea simply with δεν + present verb.

So instead of literally saying I am not able to find, Greek often just says:

• Δεν βρίσκω...

Depending on context, this can mean:

• I don’t find...
• I can’t find...
• I’m not finding...

If you wanted to be more explicit about ability, you could say:

• Δεν μπορώ να βρω το άλλο αθλητικό μου.
  = I can’t find my other sneaker.

But Δεν βρίσκω... is shorter and very natural.

Because the speaker is describing a current situation: right now, they are unable to find it.

Greek present tense often covers meanings like:

• I’m not finding it
• I can’t find it
• I don’t find it

So Δεν βρίσκω is the normal tense choice for a present problem.

If you wanted past time, you would change the verb:

• Δεν έβρισκα το άλλο αθλητικό μου.
  = I couldn’t find my other sneaker / I wasn’t finding my other sneaker.

Most likely, yes.

In modern everyday Greek, το αθλητικό usually means a sneaker / sports shoe. Very often the plural is even more common:

• τα αθλητικά = sneakers / trainers

So το άλλο αθλητικό μου most naturally means:

• my other sneaker
• or more loosely, my other sports shoe

Yes, grammatically that is possible, but in natural English the best translation is usually:

• I can’t find my other sneaker.

That sounds more idiomatic in English.

So the Greek structure is simple present with negation, but the most natural English translation often uses can’t find.

You would use the neuter plural:

• Δεν βρίσκω τα άλλα αθλητικά μου.

Breakdown:

• τα = the (neuter plural)
• άλλα = other (neuter plural)
• αθλητικά = sneakers / sports shoes
• μου = my

So:

• το άλλο αθλητικό μου = my other sneaker
• τα άλλα αθλητικά μου = my other sneakers

The structure is:

• Δεν = not
• βρίσκω = I find / I can find
• το άλλο αθλητικό μου = my other sneaker

So the sentence pattern is:

negation + verb + direct object

That is a very common Greek sentence structure.