القانون مهم.

A careful MSA pronunciation is:

al-qānūnu muhimmun

In normal pause, many speakers drop the final case endings and say:

al-qānūn muhimm

A few pronunciation notes:

• ق = a deep q sound, not an English k
• ا in قان gives a long ā
• و in نون gives a long ū
• مهم has a doubled m sound because of the shadda: mu-him-m

So مهم is not muhim with one light m at the end, but muhimm.

In Arabic, the present tense of to be is usually not stated.

So:

• القانون مهم = The law is important

This is a very common Arabic pattern called a nominal sentence. Arabic often says simply:

• the law important
• the student tired
• the weather nice

If you want was, will be, and so on, Arabic usually does use a verb.

ال is the Arabic definite article, equivalent to the.

So:

• قانون = a law / law
• القانون = the law

In this sentence, the noun is definite because of ال.

Arabic often uses the definite article for general truths or broad categories.

So القانون مهم can mean:

• The law is important
• or more generally, Law is important

This is normal in Arabic. English sometimes uses no article for general statements, but Arabic often prefers the definite form.

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

Compare these two ideas:

1. القانون مهم
   = The law is important
   Here مهم is saying something about القانون.

2. القانون المهم
   = the important law
   Here المهم is an adjective describing the noun inside one noun phrase.

So:

• القانون مهم = a full sentence
• القانون المهم = a noun phrase, not a full sentence by itself

It is an adjective in form, but in this sentence it functions as the predicate.

That means:

• القانون = the subject
• مهم = what is being said about the subject

So it behaves like important in The law is important.

Because القانون is a masculine singular noun, and the predicate adjective matches it.

So:

• القانون مهم = masculine singular
• المدرسة مهمة = feminine singular

If the noun were feminine, you would usually add ة to make the adjective feminine:

• مهم → مهمة

In fully vocalized formal Arabic, it is:

القانونُ مهمٌّ

Why?

• القانونُ has ḍamma because it is the subject (مبتدأ)
• مهمٌّ has ḍamma + tanwīn because it is the predicate (خبر) and it is indefinite

In everyday pronunciation and in most unvocalized writing, these endings are usually not shown.

Because مهم is indefinite, while القانون is definite.

• Definite nouns do not take tanwīn
• Indefinite nouns/adjectives often do

So in full form:

• القانونُ = definite, no tanwīn
• مهمٌّ = indefinite, so it takes tanwīn

This is another clue that مهم is the predicate, not part of a definite noun phrase.

Because ق is a moon letter (حرف قمري), not a sun letter.

With moon letters, the ل in ال is pronounced clearly:

• القانون = al-qānūn

If the word began with a sun letter, the l sound would assimilate, as in:

• الشمس = ash-shams

But with قانون, you keep the l sound.

Normally, for a simple beginner sentence like this, القانون مهم is the natural order.

Putting مهم first can happen in Arabic for emphasis or in more advanced structures, but it changes the feel and may require more context to sound natural.

So the standard basic pattern is:

• subject + predicate
• القانون مهم

مهم comes from the root ه م م.

This root has to do with concern, importance, intention, or preoccupation in different forms.

Related words include:

• أهم = more important / most important
• أهمية = importance
• اهتمام = interest, attention

Knowing roots can help you recognize related vocabulary.

It is singular.

• القانون = the law
• القوانين = the laws

Since the subject is singular, the predicate مهم is also singular.

You would write:

القَانُونُ مُهِمٌّ

This shows:

• القَانُونُ = al-qānūnu
• مُهِمٌّ = muhimmun

In normal modern texts, those short vowels are usually omitted, so you usually see:

القانون مهم

The difference is definiteness.

• القانون مهم = The law is important / Law is important
• قانون مهم = an important law or an important rule

So قانون مهم is usually a noun phrase, not a complete sentence in the same way.

That is because:

• قانون = an indefinite noun
• مهم = an adjective describing it

Together they mean an important law, not a law is important.