لون البنطلون بهت.

Because this is an iḍāfa construction (a noun + noun possession structure).

• لون = color
• البنطلون = the pants / the trousers

Together, لون البنطلون literally means color of the-pants, which in natural English is the color of the pants.

In Arabic, the first noun in an iḍāfa usually does not take ال-, even when the whole phrase is definite. The definiteness comes from the second noun.

So:

• لون بنطلون = a pants color / the color of some pants
• لون البنطلون = the color of the pants

Here, بهت is a past-tense verb meaning faded.

So the sentence structure is:

• لون البنطلون = the color of the pants
• بهت = faded

So the full sentence is literally The color of the pants faded.

A useful contrast is:

• لون البنطلون بهت = the pants’ color faded
• لون البنطلون باهت = the pants’ color is faded / pale

So:

• بهت = a verb, something happened
• باهت = an adjective, a description

Because the subject is لون (color), and لون is singular masculine.

Even though البنطلون refers to pants, the main noun of the phrase is لون. The sentence is about the color, not directly about the pants.

So the agreement follows لون:

• لون = masculine singular
• therefore بهت is masculine singular

If the subject were a feminine noun, the verb would usually change. For example, with a feminine singular subject you would often get a feminine past form ending in -ت.

Because Arabic usually expresses of relationships through iḍāfa, not with a separate word.

In English:

• the color of the pants

In Arabic:

• لون البنطلون

This is one of the most common structures in Arabic, and English speakers often need time to get used to it.

Other similar examples:

• باب البيت = the door of the house
• اسم البنت = the girl’s name
• لون السيارة = the color of the car

In Levantine Arabic, بنطلون is commonly treated as a singular noun meaning pants / trousers / a pair of pants.

So although English says pants with plural form, Arabic often uses a singular word for the clothing item:

• البنطلون = the pants / the trousers / the pair of pants

If you need an actual plural, Arabic can use forms like بناطيل or sometimes بنطلونات, depending on region and style. But for one item of clothing, بنطلون is very normal.

A common Levantine-style pronunciation is roughly:

lōn il-banṭalōn behet
or in some accents something close to
lōn el-banṭalōn behit

A few notes:

• لون is often pronounced lōn
• ال is often pronounced il- or el- in Levantine
• بنطلون is roughly banṭalōn
• the short vowels in بهت can vary a bit by speaker and region

You do not need to obsess over the exact vowel quality at first; the key thing is recognizing the sentence pattern and the word بهت as faded.

Yes, you often can.

• البنطلون بهت = the pants faded
• لون البنطلون بهت = the color of the pants faded

The version with لون is a little more specific, because it focuses on the color rather than the item as a whole.

In everyday speech, if the meaning is clear from context, people may simply say البنطلون بهت.

Yes, but لون البنطلون بهت is the more straightforward, conversational order in Levantine.

This sentence uses a very common pattern:

• subject
  • verb

So:

• لون البنطلون = subject
• بهت = verb

You may hear verb-first order in Arabic too, but for a simple everyday sentence in Levantine, the subject-first version is very natural.

A common Levantine negation would be:

لون البنطلون ما بهت = the color of the pants didn’t fade

In Levantine, ما is very commonly used to negate past verbs.

So:

• بهت = it faded
• ما بهت = it didn’t fade

Depending on region, other negation patterns can appear, but ما + past verb is a very useful basic pattern to know.

It is best understood as a sentence with a noun phrase subject followed by a past verb:

• لون البنطلون = the subject
• بهت = the predicate verb

So although it begins with a noun phrase, the important thing is that بهت is still a real verb, not an omitted is.

This matters because learners sometimes confuse:

• لون البنطلون بهت = the pants’ color faded
  with
• لون البنطلون باهت = the pants’ color is faded / pale

That difference between verb and adjective is very important.

The three biggest takeaways are:

1. iḍāfa

   • لون البنطلون = the color of the pants

2. Verb vs adjective

   • بهت = faded (verb)
   • باهت = faded/pale (adjective)

3. Agreement follows the head noun

   • The subject is لون, so the verb matches لون, not البنطلون

If you understand those three points, you understand most of the grammar in this sentence.