Το αδέσποτο ζώο συντροφιάς περιμένει.

Το is the neuter singular definite article in the nominative here.

In Το αδέσποτο ζώο συντροφιάς περιμένει, the subject is το αδέσποτο ζώο συντροφιάς:

• το = the for a neuter singular noun
• αδέσποτο agrees with ζώο
• ζώο is a neuter singular noun

So το αδέσποτο ζώο means the stray animal / the stray pet animal, depending on context.

Because the noun is the subject of περιμένει, it is in the nominative.

Αδέσποτο means stray, ownerless, or not belonging to anyone.

It is very commonly used for animals such as dogs and cats:

• αδέσποτος σκύλος = stray dog
• αδέσποτη γάτα = stray cat
• αδέσποτο ζώο = stray animal

Here it is in the neuter singular form αδέσποτο because it describes ζώο, which is neuter.

You may also see the dictionary form:

• masculine: αδέσποτος
• feminine: αδέσποτη
• neuter: αδέσποτο

Yes, Greek adjectives can often appear before or after the noun.

Here, το αδέσποτο ζώο is the most natural neutral order and simply means the stray animal.

You may also hear:

• το ζώο το αδέσποτο

But that sounds more marked or emphatic, and it is not the plain default phrasing here.

So for a learner, the safest pattern is:

• article + adjective + noun
• το αδέσποτο ζώο

Literally, ζώο συντροφιάς means animal of companionship.

In natural English, that is pet or companion animal.

Breakdown:

• ζώο = animal
• συντροφιάς = of companionship / of company

So:

• ζώο συντροφιάς = pet, companion animal

This is a very common and especially somewhat formal expression in Greek.

Συντροφιάς is the genitive singular of συντροφιά.

Greek often uses the genitive to express something like of in English. So:

• ζώο συντροφιάς = animal of companionship
• natural English: pet / companion animal

This is a fixed expression, so it is useful to learn it as a whole phrase.

Related forms of συντροφιά:

• nominative: η συντροφιά
• genitive: της συντροφιάς

Here only the noun συντροφιάς appears, without its article, because the full phrase works like a compound-style expression.

You absolutely can. Κατοικίδιο is also a very common word for pet.

Compare:

• κατοικίδιο = pet
• ζώο συντροφιάς = companion animal / pet

The difference is mostly one of style and nuance:

• κατοικίδιο is very common in everyday speech
• ζώο συντροφιάς can sound a bit more formal, official, or precise

So this sentence could have used κατοικίδιο, but ζώο συντροφιάς is perfectly natural Greek.

Περιμένει is the third person singular present tense of περιμένω.

So it means:

• he/she/it waits
• he/she/it is waiting

In this sentence, it refers to το αδέσποτο ζώο συντροφιάς, so the natural English translation is it is waiting or the stray pet is waiting.

Greek present tense can cover both:

• a general present: waits
• an action happening now: is waiting

Context tells you which one is meant.

Greek often does not need an explicit subject pronoun because the verb ending already shows the person and number.

In περιμένει, the ending tells you it is third person singular:

• I wait = περιμένω
• you wait = περιμένεις
• he/she/it waits = περιμένει

Since the subject noun is already present — το αδέσποτο ζώο συντροφιάς — there is no need to add a separate word for it.

In fact, Greek usually avoids unnecessary subject pronouns unless there is emphasis or contrast.

Yes. In Greek, grammatical gender and biological sex are not always the same thing.

Ζώο is grammatically neuter, so it takes:

• το for the article
• neuter adjective forms such as αδέσποτο

That does not mean the animal itself is sexless. It only means the noun ζώο belongs to the neuter grammatical class.

This is very normal in Greek:

• το παιδί = the child, also neuter
• το ζώο = the animal, neuter

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

The basic neutral order here is:

• Το αδέσποτο ζώο συντροφιάς περιμένει.

But you could also hear:

• Περιμένει το αδέσποτο ζώο συντροφιάς.

That can sound more like The stray pet is waiting with focus on the action first, or it may fit the flow of a larger conversation better.

Still, for a learner, the original order is the best default:

• subject + verb

A rough pronunciation is:

to a-DHE-spo-to ZO-o sin-tro-fi-AS pe-ri-ME-ni

A few helpful points:

• δέ in αδέσποτο has the stress: a-DHE-spo-to
• ζ in ζώο sounds like the z in zoo
• ζώο has two vowel sounds: ZO-o
• συντροφιάς is stressed at the end: sin-tro-fi-AS
• περιμένει is stressed on -μέ-: pe-ri-ME-ni

If you want, a more Greek-like phonetic guide would be:

• [to aˈðespoto ˈzoo sindrofiˈas periˈmeni]

Yes, it is complete.

Περιμένω often means to wait, and in Greek it can stand on its own, just like in English:

• Περιμένω. = I’m waiting.
• Το ζώο περιμένει. = The animal is waiting.

If you want to say wait for someone/something, Greek can also add an object or phrase, for example:

• Περιμένει τον κτηνίατρο. = It is waiting for the vet.
• Περιμένει να ανοίξει η πόρτα. = It is waiting for the door to open.

So the sentence as given is perfectly complete: it simply tells you that the animal is waiting.