المنشفة مبللة.

Because Arabic often uses a nominal sentence in the present tense, with no separate word for is / are.

So:

• المنشفة مبللة = The towel is wet

Arabic literally gives something like:

• the towel — wet

This is completely normal in the present tense.

If you want was or will be, Arabic usually does use extra words, such as:

• كانت المنشفة مبللة = The towel was wet
• ستكون المنشفة مبللة = The towel will be wet

Because مبللة here is the predicate of the sentence, not an adjective directly attached to the noun.

Compare these two:

• المنشفة مبللة = The towel is wet
• المنشفة المبللة = the wet towel

This is a very important difference in Arabic:

1. Predicate adjective:

   • المنشفة مبللة
   • The second word is usually indefinite.
   • Meaning: The towel is wet

2. Attributive adjective:

   • المنشفة المبللة
   • The adjective matches the noun in definiteness, so it also takes الـ.
   • Meaning: the wet towel

So the lack of الـ on مبللة helps show that this is a full sentence, not just a noun phrase.

Because المنشفة is a feminine singular noun, and the predicate adjective agrees with it in gender and number.

• المنشفة = feminine singular
• مبللة = feminine singular

The masculine form would be:

• مبلل = wet (masculine)

So for example:

• الكتاب مبلل = The book is wet
• المنشفة مبللة = The towel is wet

That final ة is the usual feminine ending.

Usually, yes. A noun ending in ة is very often feminine.

So منشفة is treated as feminine, and that is why the adjective is also feminine:

• منشفة → feminine noun
• مبللة → feminine adjective/predicate

This is a very common pattern in Arabic, although there are some exceptions elsewhere in the language.

With full case endings, it is:

• المنشفةُ مبللةٌ

More fully vocalized:

• ٱلْمِنْشَفَةُ مُبَلَّلَةٌ

Here:

• المنشفةُ has ـُ because it is the subject of the nominal sentence
• مبللةٌ has ـٌ because it is the predicate

In normal pause, especially in everyday reading or speech, those final short vowels are usually not pronounced, so learners often hear it more like:

• al-minshafa muballala

A helpful pronunciation is:

• al-min-sha-fa mu-bal-la-la

More carefully:

• المنشفة = al-minshafa
• مبللة = muballala

A few pronunciation notes:

• The ش sound is like sh in ship
• The ة at the end is usually pronounced like -a in pause
• The ll in مبللة is doubled because of the shadda, so hold it a little longer: mubal-lala

In Arabic, adjectives normally come after the noun they describe.

So:

• منشفة مبللة = a wet towel
• literally: towel wet

And in your sentence:

• المنشفة مبللة = The towel is wet

Here the second word is not just an adjective inside a phrase; it is the predicate of the sentence. But the order still looks familiar to English learners because Arabic commonly places this kind of describing word after the noun.

Normally, no. It is understood as a full sentence:

• المنشفة مبللة = The towel is wet

If you want the wet towel, you say:

• المنشفة المبللة

That extra الـ on المبللة is what turns it into a noun phrase rather than a sentence.

So this contrast is worth memorizing:

• المنشفة مبللة = The towel is wet
• المنشفة المبللة = the wet towel

Yes, but the meaning changes.

• منشفة مبللة usually means a wet towel

That is a noun phrase, not necessarily a complete sentence.

Meanwhile:

• المنشفة مبللة = The towel is wet

So adding or removing الـ changes whether you mean something definite (the towel) or indefinite (a towel), and it can also affect whether the expression is read as a sentence or just a phrase.

For a learner, the simplest answer is: it functions here as an adjective meaning wet.

More technically, it is related to a passive participle/adjectival form, and in actual use it works like a normal descriptive word.

So in this sentence, you can safely think:

• مبللة = wet (feminine singular)

That is the most useful way to understand it at this level.

Then the predicate would normally change to the masculine form.

For example:

• القميص مبلل = The shirt is wet
• المنشفة مبللة = The towel is wet

So the pattern is:

• masculine noun → مبلل
• feminine noun → مبللة

This agreement is very important in Arabic.

It is a nominal sentence.

That means it starts with a noun, not a verb:

• المنشفة = the subject/topic
• مبللة = the predicate/comment

So the structure is:

• subject + predicate

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