الموسم جديد.

In Arabic, the present tense often does not use a separate word for is/am/are. So الموسم جديد literally looks like the season new, but it means the season is new.

This is very normal in both Standard Arabic and Levantine-style sentences.

الـ is the Arabic definite article, meaning the.

So الموسم = the season.

In Levantine pronunciation, الـ is often said as il- or el-, so الموسم is commonly pronounced something like il-mawsem or el-mawsem.

Because الموسم جديد is a full sentence: the season is new.

If you say الموسم الجديد, that is not a full sentence anymore. It means the new season.

So the contrast is:

• الموسم جديد = The season is new
• الموسم الجديد = The new season

This is one of the most important differences for learners to notice.

A common Levantine-style pronunciation is il-mawsem jdīd or el-mawsem jdīd.

A few notes:

• الموسم is often pronounced mawsem
• جديد is often jdīd
• The short vowels are usually not written in Arabic script, so learners have to learn them from listening and exposure

Because الموسم is a masculine singular noun, and the adjective has to match it.

So:

• موسم جديد = a new season
• الموسم جديد = the season is new

The masculine singular form of the adjective is جديد.

Then the adjective would usually become جديدة.

For example:

• السيارة جديدة = The car is new

So:

• masculine: جديد
• feminine: جديدة

This kind of agreement is very important in Arabic.

Not for this meaning.

For a sentence like The season is new, the normal order is:

• subject + adjective/predicate
• الموسم جديد

Arabic adjectives normally come after the noun they describe, and in this sentence جديد is serving as the predicate.

If you want the new season, you would say:

• الموسم الجديد

It is understandable and natural enough, but it can feel a bit neutral or formal-looking in writing because the wording is shared with Standard Arabic.

In actual spoken Levantine, the pronunciation would be clearly colloquial, for example:

• il-mawsem jdīd

So the structure is fine, but how colloquial it sounds depends a lot on pronunciation and context.

A very common Levantine way is:

• الموسم مو جديد
• الموسم مش جديد

Both mean The season is not new.

Which one you hear more depends on the region and speaker.