El dret de desistiment és important.

El is the masculine singular definite article in Catalan, equivalent to the in English.

Here it goes with dret:

• el dret = the right

Catalan nouns usually need an article more often than English, especially in normal statements like this one.

Here dret means right in the legal or entitlement sense.

So:

• el dret = the right

Be careful, because dret can also appear in other contexts with related meanings, such as straight or upright, depending on the sentence. In this sentence, though, it clearly means a legal right.

Catalan often uses noun + de + noun where English might use:

• a compound noun
• of
• or an adjective-like structure

So:

• el dret de desistiment = literally the right of withdrawal/cancellation

This is a very common pattern in Catalan:

• el dret de vot = the right to vote
• la llibertat d’expressió = freedom of expression

Here de desistiment specifies what kind of dret it is.

Desistiment is a formal noun meaning something like withdrawal, cancellation, or backing out, depending on context.

In legal and consumer contexts, dret de desistiment usually refers to the right to withdraw from a contract or purchase within a certain period.

It is a fairly formal word, so this sentence sounds like legal, administrative, or consumer-rights language.

És is the 3rd person singular of the verb ser (to be):

• és = is

The accent matters because:

• és = is
• es = self / oneself / each other or part of a pronominal structure

So the accent distinguishes two different words.

Catalan, like Spanish, usually distinguishes between:

• ser for identity, definition, essential characteristics
• estar for states, conditions, location in many cases

Here the sentence says that the right is important, which is treated as an inherent quality or general characteristic, so Catalan uses ser:

• El dret de desistiment és important.

Using estar here would sound unnatural in standard Catalan.

In this sentence, important is singular and matches el dret, which is masculine singular.

Catalan adjectives often agree with the noun, but some adjectives have the same form for masculine and feminine in the singular. Important is one of those:

• un dret important
• una qüestió important

The plural does change:

• drets importants
• qüestions importants

So in the singular, important does not need a different ending.

The basic structure is:

• El dret de desistiment = subject
• és = verb
• important = adjective / predicate

So the pattern is:

Subject + verb + adjective

This is very similar to English:

• The right of withdrawal is important.

Normally, no. In standard Catalan, you would usually keep the article:

• El dret de desistiment és important.

Leaving out El would sound incomplete or unnatural in a normal declarative sentence.

A rough pronunciation guide for an English speaker is:

• El ≈ el
• dret ≈ dret with a short tapped r
• de ≈ duh/deh
• desistiment ≈ deh-zee-stee-MENT or deh-sis-tee-MENT, depending on accent and dialect
• és ≈ ess
• important ≈ im-por-TANT

A more important point than exact imitation is stress:

• desistiment → stress on the last syllable: -ment
• important → stress on the last syllable: -tant

The grammar is completely normal, but the vocabulary is somewhat formal because dret de desistiment is a legal or administrative expression.

So:

• grammatically: ordinary and standard
• stylistically: formal / legal / consumer-information language

You are likely to see it in:

• contracts
• websites about returns
• consumer-rights information
• legal documents

Yes. That would mean is very important:

• El dret de desistiment és molt important.

Here:

• molt = very

This is a natural way to strengthen the statement.

Not exactly in form, but yes in meaning.

Catalan is using a noun:

• desistiment = withdrawal / cancellation

English often uses:

• a noun: right of withdrawal
• or an infinitive-like structure: right to withdraw

Catalan prefers the noun phrase here:

• dret de desistiment

So the idea matches English, even if the grammar is a little different.