الحماس واضح.

In careful MSA with full case endings, it is pronounced:

al-ḥamāsu wāḍiḥun

In normal pause, learners often hear it more like:

al-ḥamās wāḍiḥ

A few useful pronunciation notes:

• ح in الحماس is a deeper h sound than English h.
• ال is pronounced fully here because ح is a moon letter, not a sun letter.
• ض in واضح is an emphatic consonant, often one of the harder Arabic sounds for English speakers.

Because Arabic often leaves out the present-tense to be.

So:

• الحماس واضح literally looks like the enthusiasm clear
• but it means The enthusiasm is clear

This is a normal nominal sentence in Arabic.

If you wanted a past-tense version, you would usually add a verb such as كان:

• كان الحماس واضحًا = The enthusiasm was clear

It is a complete sentence.

The structure is:

• الحماس = the subject/topic (mubtadaʾ)
• واضح = the predicate/comment (khabar)

So the whole sentence means something like:

• The enthusiasm is clear
• The enthusiasm is obvious

This is one of the most basic sentence patterns in Arabic.

Because الحماس is the subject, and subjects in this kind of sentence are often definite.

Meanwhile, واضح is the predicate, and predicates are often indefinite.

So:

• الحماس واضح = The enthusiasm is clear

But if واضح were also definite, it would usually no longer sound like this simple sentence pattern.

A very important comparison:

• الحماس واضح = The enthusiasm is clear
• الحماس الواضح = the clear enthusiasm

In the second one, الواضح is a true adjective describing the noun directly, not the predicate of a sentence.

Yes, but it is being used as the predicate of the sentence.

That is a common pattern in Arabic: an adjective can function as the predicate.

So in:

• الحماس واضح

واضح is not just attached to the noun as an ordinary descriptive adjective. Instead, it is saying something about الحماس:

• The enthusiasm is clear

Compare:

• الحماس واضح = sentence = The enthusiasm is clear
• الحماس الواضح = noun phrase = the clear enthusiasm

That difference is very important.

With full vowel endings, the sentence is:

الحماسُ واضحٌ

Why?

• الحماسُ is nominative because it is the mubtadaʾ (subject/topic)
• واضحٌ is also nominative because it is the khabar (predicate)

In everyday reading and speech, these final short vowels are often not pronounced, so you commonly see:

الحماس واضح

Yes. Here, واضح is masculine singular, matching الحماس, which is also treated as masculine singular.

So:

• masculine singular: واضح
• feminine singular: واضحة

For example:

• الفكرة واضحة = The idea is clear

In your sentence, the masculine form is correct because الحماس is masculine.

You can put the predicate first in some contexts, but the normal neutral order is:

الحماس واضح

A reversed version such as:

واضحٌ الحماسُ

is more marked or literary and would usually need the full grammatical context to sound natural.

Also, without case endings, واضح الحماس could be misunderstood as a noun phrase rather than a simple sentence.

So for learners, the safest and most natural order is:

الحماس واضح

They are not the same.

• الحماس واضح = a full sentence: The enthusiasm is clear
• حماس واضح = usually a noun phrase: clear enthusiasm

Why?

Because in حماس واضح, both words are indefinite, so واضح is naturally understood as an adjective modifying حماس.

But in الحماس واضح, the first word is definite and the second is indefinite, which strongly signals a nominal sentence.

Usually, no.

In normal Arabic writing, especially outside textbooks and grammar exercises, you would typically write:

الحماس واضح

without the final short vowels.

In fully vocalized or educational Arabic, you may see:

الحماسُ واضحٌ

Both are correct; the second just shows the grammar more explicitly.