شهية القطة جيدة حقا.

In Arabic, the present-tense to be is usually not written as a separate word in simple statements.

So شهية القطة جيدة حقا literally looks like:

• the cat’s appetite
• good
• really / truly

But it naturally means The cat’s appetite is really good.

This is called a nominal sentence in Arabic: a sentence built without an explicit present-tense verb.

شهية means appetite here.

Grammatically, it is the head of the phrase شهية القطة, which means the cat’s appetite. In the full sentence, this whole phrase functions as the subject-like part of the nominal sentence.

So:

• شهية القطة = the cat’s appetite
• جيدة = good
• حقا = really / truly

This is an iḍāfa construction, often called the construct phrase.

In Arabic, possession is often expressed by putting two nouns together:

• the first noun is the thing possessed
• the second noun is the possessor

So here:

• شهية = appetite
• القطة = the cat

Together:

• شهية القطة = the appetite of the cat = the cat’s appetite

This is one of the most important structures in Arabic.

In an iḍāfa construction, the second noun is in the genitive case.

So in:

• شهيةُ القطةِ

the noun القطةِ is genitive because it is the second part of the possession phrase.

If the sentence were fully vowelled, you would see that clearly:

• شَهِيَّةُ القِطَّةِ جَيِّدَةٌ حَقًّا

Here:

• شَهِيَّةُ = nominative
• القِطَّةِ = genitive
• جَيِّدَةٌ = nominative
• حَقًّا = accusative/adverbial

The whole phrase شهية القطة functions as the subject-like element of the sentence, but the grammatical head of that phrase is شهية.

So in practice, you can think of it like this:

• شهية is the core noun
• القطة depends on it inside the iḍāfa
• شهية القطة together is what is being described as جيدة

In other words, what is good?
Answer: the cat’s appetite

جيدة is feminine because it agrees with شهية, which is a feminine noun.

In Arabic, adjectives and predicate adjectives usually agree with the noun they describe in gender and number.

Since شهية is feminine singular, the adjective/predicate is also feminine singular:

• masculine: جيد
• feminine: جيدة

So جيدة matches شهية.

Because it is the predicate of the nominal sentence, and predicates are often indefinite in Arabic.

So:

• شهية القطة = a definite noun phrase, because it is an iḍāfa ending in the definite noun القطة
• جيدة = the predicate, describing that noun phrase

Arabic commonly says:

• الكتاب مفيد = The book is useful
• الطالبة ذكية = The student is smart
• شهية القطة جيدة = The cat’s appetite is good

If you made جيدة definite as الجيدة, it would usually change the meaning or sound unnatural in this context.

حقا adds emphasis. It means something like:

• really
• truly
• indeed

So جيدة حقا means really good or truly good.

It is often used as an adverbial expression to strengthen the statement.

حقا is commonly written with tanwīn fatḥ in fully vowelled text: حَقًّا.

It is functioning adverbially here, so it appears in the accusative form.

In a fully vowelled version:

• شَهِيَّةُ القِطَّةِ جَيِّدَةٌ حَقًّا

You do not need to memorize all the theory at once, but it is useful to know that many Arabic adverb-like expressions appear in the accusative.

This is a very common learner question.

The final ة is a tāʾ marbūṭa. Its pronunciation depends on context.

• In pause, on its own, شهية is pronounced roughly shahiyya or shahiyyah
• But in an iḍāfa construction, the ة is pronounced as t

So in شهية القطة, you pronounce it like:

• shahiyyat al-qiṭṭa (or with case endings, shahiyyatu l-qiṭṭati)

That t sound is important because the word is connected to the following noun in the construct phrase.

A fully vowelled version is:

شَهِيَّةُ القِطَّةِ جَيِّدَةٌ حَقًّا

This shows the grammar clearly:

• شَهِيَّةُ — nominative, because it is the first part of the nominal sentence
• القِطَّةِ — genitive, because it is the second term of the iḍāfa
• جَيِّدَةٌ — nominative, because it is the predicate
• حَقًّا — accusative, used adverbially

In normal everyday writing, these short vowels are usually omitted.

Yes, Arabic word order can sometimes change for style or emphasis, but شهية القطة جيدة حقا is a straightforward and natural order.

The basic structure is:

• topic / subject-like phrase: شهية القطة
• predicate: جيدة
• emphasis/adverb: حقا

You may also see adverb placement vary slightly in some contexts, but for a learner, this sentence is a very good standard model.

Yes, this is a very natural Arabic way to express that idea.

Arabic often prefers a noun phrase plus description rather than using a verb like has. Instead of saying something exactly like the cat has a good appetite, Arabic commonly says:

• The cat’s appetite is good

That is exactly what this sentence does:

• شهية القطة جيدة حقا

So it is both grammatically useful and idiomatic.