القطة تخرخر حقا.

A fully vocalized version is:

القِطَّةُ تُخَرْخِرُ حَقًّا

A careful MSA pronunciation is roughly:

al-qiṭṭatu tukharkhiru ḥaqqan

A few sound notes:

• ق is q, a deeper sound than English k
• ط is an emphatic t
• خ is the throaty sound heard in German Bach or Scottish loch
• The ṭṭ in القطة is doubled because of the shadda

In less formal pronunciation, learners often hear something closer to:

al-qiṭṭa tukharkhir ḥaqqan

because final case endings are often not fully pronounced outside very careful MSA.

الـ is the Arabic definite article, meaning the.

So:

• قطة = a cat or cat
• القطة = the cat

Also, in this word the ل of ال is pronounced clearly: al-qiṭṭa.

That is because ق is a moon letter, not a sun letter. So there is no assimilation here.

In formal Arabic, قطة is a feminine noun and can specifically mean a female cat. The masculine form is قط.

However, learners should know two things:

• grammatically, قطة is definitely feminine
• in actual usage, especially outside very strict dictionary-style distinctions, قطة is also often used very naturally when talking about a cat in general

In this sentence, what matters most is that القطة is grammatically feminine.

Because the subject القطة is feminine singular, the verb is also feminine singular.

In the imperfect tense, the prefix تـ can mark she/it feminine.

So:

• القطة تخرخر = the cat purrs / is purring
• القط يخرخر = the male cat purrs / is purring

This is a basic agreement pattern in Arabic: the verb matches the subject in gender, and here it matches القطة as feminine singular.

تخرخر is in the imperfect form.

In MSA, the imperfect can express:

• present action
• habitual action
• sometimes near-future meaning, depending on context or particles

So this sentence can mean things like:

• The cat is purring
• The cat purrs

Arabic does not force the same sharp distinction that English makes between purrs and is purring unless the context makes it clear.

Because Arabic normally does not use a present-tense form of to be the way English does.

So Arabic can simply say:

القطة تخرخر

and that already means:

• The cat purrs
• The cat is purring

This is completely normal. In present-time sentences, Arabic usually leaves out is / are / am.

حقًّا means something like:

• really
• truly
• indeed

So القطة تخرخر حقا means that the speaker is adding emphasis, as in:

• The cat really is purring
• The cat is truly purring
• The cat is purring indeed

In full spelling with diacritics, it is حقًّا. This is an adverb, and in formal grammar it appears in the accusative form.

That is a very normal position for an adverb like حقًّا.

Arabic often places this kind of word after the main statement it modifies. So:

القطة تخرخر حقا

naturally means:

The cat is really purring

Putting حقًّا at the end gives a smooth, natural emphasis to the whole sentence.

Because it begins with a noun, القطة, it is usually treated as a nominal sentence in Arabic grammar.

Very roughly:

• القطة = the topic or subject
• تخرخر = the predicate, here expressed by a verb

So the structure is something like:

The cat — purrs

You could also say:

تخرخر القطة

which begins with the verb instead. That version is a verbal sentence.

Both are grammatical, but the given sentence starts by highlighting the cat.