سوء الخدمة واضح.

Because Arabic often omits the present-tense verb to be.

So سوء الخدمة واضح is a nominal sentence:

• سوء الخدمة = the subject
• واضح = the predicate / description

In natural English, we must say is, but in Arabic the present tense usually leaves it unstated:

• سوء الخدمة واضح = The poor service is obvious

If you wanted a past or future meaning, Arabic would use a verb:

• كان سوء الخدمة واضحًا = The poor service was obvious

It is an iḍāfa construction, often called a genitive construction or noun + noun phrase.

Structure:

• سوء = badness / poor quality
• الخدمة = the service

Together:

• سوء الخدمة = the poor quality of the service / poor service

This is very common in Arabic. The first noun is the main word, and the second noun specifies it.

Other similar examples:

• مدير الشركة = the manager of the company
• جودة التعليم = the quality of education

In an iḍāfa, the first noun usually does not take ال. The whole phrase becomes definite if the second noun is definite.

So:

• سوء خدمة = poor service / bad service in a general sense
• سوء الخدمة = the poor service / the poor quality of the service

Here, الخدمة has ال, so the whole phrase is definite.

That is why سوء stays without ال.

Because واضح agrees with the whole subject phrase, whose head noun is سوء, not الخدمة.

In سوء الخدمة:

• the main noun is سوء
• الخدمة only completes the iḍāfa

Since سوء is treated as masculine singular, the predicate is also masculine singular:

• واضح

If the subject were الخدمة by itself, then you would say:

• الخدمة واضحة = The service is clear / obvious

But in your sentence, the real subject is سوء الخدمة, so:

• سوء الخدمة واضح

سوء is a noun, not an adjective here.

It means something like:

• badness
• poor quality
• سوء = evil / harm / badness, depending on context

So سوء الخدمة literally means:

• the badness of the service
• the poor quality of the service

This is why the sentence is not built like الخدمة سيئة.

Compare:

• الخدمة سيئة = The service is bad
• سوء الخدمة واضح = The poor quality of the service is obvious

These are related, but not identical in structure.

Yes, and that is a very natural sentence.

• الخدمة سيئة = The service is bad
• سوء الخدمة واضح = The poor service is obvious / The bad quality of the service is clear

The difference is mainly one of focus:

• الخدمة سيئة directly describes the service
• سوء الخدمة واضح talks about the fact or evidence of poor service being obvious

So the original sentence sounds a bit more formal or analytical.

Because it is the second term of an iḍāfa.

In an iḍāfa:

• first noun = مضاف
• second noun = مضاف إليه

The second noun is put in the genitive case.

With full case endings, the sentence would be:

• سُوءُ الخِدْمَةِ واضِحٌ

Breakdown:

• سوءُ = nominative, because it is the subject
• الخدمةِ = genitive, because it is the second part of the iḍāfa
• واضحٌ = nominative, because it is the predicate

In everyday writing, these endings are usually not written.

In fully vocalized MSA, it would typically be:

سُوءُ الخِدْمَةِ واضِحٌ

Word by word:

• سُوءُ = suu'u / sūʾu
• الخِدْمَةِ = al-khidmati
• واضِحٌ = wāḍiḥun

Case roles:

• سوءُ = nominative subject
• الخدمةِ = genitive in iḍāfa
• واضحٌ = nominative predicate

It is pronounced approximately sūʾ.

Important points:

• the و gives a long ū sound
• the ء is a hamza, a glottal stop

So it is not just a smooth suu. There is a catch at the end:

• سوء ≈ soo’

With case ending in formal reading:

• سُوءُ = sūʾu

Learners often miss the hamza, but it is part of the word.

Yes. This is a very normal word order for a nominal sentence:

• سوء الخدمة = subject
• واضح = predicate

So the pattern is:

• [subject] + [description]

This is especially common when the subject is definite and the predicate is indefinite or descriptive.

You may sometimes see different word order in Arabic for emphasis, but this sentence in its current order is straightforward and standard.

Because predicates in Arabic are often indefinite, especially when they function like adjectives in English.

So:

• سوء الخدمة واضح literally means The poor service [is] obvious

Here واضح is not the obvious one. It is simply describing the subject.

This is very common:

• الجو جميل = The weather is nice
• الكتاب مفيد = The book is useful
• سوء الخدمة واضح = The poor service is obvious

Yes, it sounds fairly formal or neutral, and it would fit well in:

• reviews
• reports
• customer-service complaints
• news or commentary

It is a bit more formal than simply saying:

• الخدمة سيئة

Using سوء الخدمة gives a more abstract, report-like tone, similar to English expressions such as:

• the poor quality of service
• the inadequacy of the service

It can in some contexts for emphasis, but the basic and most neutral version is:

• سوء الخدمة واضح

If you say:

• واضح سوء الخدمة

it can sound marked, poetic, or context-dependent, and it is not the most typical beginner-friendly order.

So for standard MSA learning, treat:

• سوء الخدمة واضح as the normal pattern.