Ανησυχώ μήπως αργήσει το λεωφορείο αύριο το πρωί.

Here μήπως introduces something the speaker is worried might happen. After verbs like Ανησυχώ or Φοβάμαι, it often means that / in case / lest / maybe in a negative or unwanted sense.

So in this sentence, μήπως αργήσει το λεωφορείο means something like that the bus might be late.

This is different from μήπως in direct questions, where it can mean perhaps or suggest uncertainty, as in Μήπως ξέρεις; = Do you happen to know?

Αργήσει is the form Greek uses here because the clause after μήπως refers to a possible future event.

• αργεί = present indicative, it is late / it is being late / it tends to be late
• αργήσει = aorist subjunctive form, it might be late / it may end up being late

After μήπως in a sentence of worry or fear, Greek normally uses the subjunctive-type form. Since this is about one possible event tomorrow morning, the aorist subjunctive αργήσει is the natural choice.

Yes. It is the aorist subjunctive, 3rd person singular, from αργώ.

In Modern Greek, the subjunctive is usually recognized by:

• particles like να, ας, or structures like μήπως
• and often a non-past form of the verb

Here, μήπως is what triggers that kind of clause, so Greek does not need να as well.

Because μήπως already introduces the subordinate clause by itself in this pattern.

So Greek says:

• Ανησυχώ μήπως αργήσει...

not normally:

• Ανησυχώ μήπως να αργήσει...

That would sound wrong in standard Greek.

Greek word order is more flexible than English. The subject often comes after the verb, especially in subordinate clauses.

So:

• μήπως αργήσει το λεωφορείο

is completely natural and means that the bus might be late.

You could also put the subject earlier in some contexts, but the given order sounds very normal. Greek often places the verb first and the subject later without changing the basic meaning.

Greek uses the definite article more often than English.

Here το λεωφορείο usually means the bus in a specific, understood sense: the bus the speaker is expecting, taking, or talking about.

If you said just λεωφορείο, it would sound less natural in this sentence unless you were speaking in a more general or special context.

Ανησυχώ means I worry, I’m worried, or I’m concerned.

In this sentence it expresses present concern about a future possibility. So English might translate it in different natural ways:

• I’m worried that the bus might be late tomorrow morning.
• I’m concerned the bus may be late tomorrow morning.

Greek often uses the simple present Ανησυχώ where English might prefer I’m worried.

That is a very natural place for time expressions in Greek. It tells you when the possible delay would happen.

• αύριο = tomorrow
• το πρωί = in the morning
• together: tomorrow morning

Greek word order is flexible, so other placements are possible, but ...το λεωφορείο αύριο το πρωί sounds very normal.

Yes, and many speakers might actually choose καθυστερήσει in this context.

• αργήσει = be late
• καθυστερήσει = be delayed / arrive late

So:

• Ανησυχώ μήπως αργήσει το λεωφορείο.
• Ανησυχώ μήπως καθυστερήσει το λεωφορείο.

Both are correct. καθυστερήσει can sound a bit more like the bus service itself is delayed, while αργήσει is the broader everyday idea of being late.

Greek usually expresses ideas like might, may, or could through verb forms and particles rather than a separate modal verb.

In this sentence, the idea of might comes from:

• μήπως, which shows concern about a possibility
• αργήσει, the subjunctive form referring to a possible future event

So the combination of those two gives the meaning might be late, even though there is no single separate word exactly equal to English might.

Yes, but it usually doesn’t need to be.

• Ανησυχώ already means I worry / I’m worried

Greek verb endings normally show the subject, so pronouns are often omitted unless you want emphasis or contrast.

You could say:

• Εγώ ανησυχώ μήπως αργήσει το λεωφορείο αύριο το πρωί.

But that would add emphasis, something like I’m the one who’s worried... rather than being the neutral everyday version.