Vull saber la veritat.

Vull is the first-person singular present form of voler, which means to want.

So:

• vull = I want
• vols = you want
• vol = he/she/it wants
• volem = we want
• voleu = you all want
• volen = they want

It is an irregular verb, so you cannot predict vull just by taking the infinitive voler and adding a regular ending.

Because after vull, Catalan uses the infinitive of the next verb.

So the structure is:

vull + infinitive

That is exactly like English:

• I want to know
• Vull saber

You do not say vull sé.
That would be like saying I want I know in English.

This is a very common question because Catalan has more than one verb that can translate English to know.

• saber = to know a fact, to know information, to know how
• conèixer = to know a person, place, or thing through familiarity

So:

• Sé la resposta = I know the answer
• Conec la Maria = I know Maria
• Conec Barcelona = I know Barcelona

In Vull saber la veritat, you are talking about information or a fact, so saber is the correct verb.

It can feel like either, depending on context.

Literally, saber means to know, but in a sentence like Vull saber la veritat, English often naturally understands it as I want to know the truth or I want to find out the truth.

Why? Because if you say you want to know something, it usually implies that you do not know it yet.

So the Catalan sentence is the normal way to express that idea.

No. In normal Catalan, you need the article here: la veritat.

So:

• Vull saber la veritat = correct
• Vull saber veritat = not natural / incorrect in standard usage

This is similar to English the truth. Catalan commonly uses the definite article with nouns like this, especially in fixed expressions such as:

• dir la veritat = to tell the truth
• saber la veritat = to know the truth

Catalan often drops subject pronouns because the verb ending already shows who the subject is.

So both of these are possible:

• Vull saber la veritat
• Jo vull saber la veritat

The first is the normal neutral version.
The second adds emphasis, contrast, or emotional force, something like:

• I want to know the truth
• As for me, I want to know the truth

So leaving out jo is completely normal.

Yes. This is a very normal Catalan sentence.

If you include the omitted subject, the structure is:

Jo + vull + saber + la veritat

That is:

subject + conjugated verb + infinitive + object

When the subject pronoun is omitted, the sentence simply begins with vull:

Vull saber la veritat

So even though it starts with a verb, it is not strange at all.

In standard Catalan, vull is pronounced approximately buʎ.

A few useful points:

• the initial v is usually pronounced like b in most Catalan accents
• u sounds like oo in food
• ll is traditionally a palatal sound that English does not really have

A rough approximation for English speakers is something like booly, but very compressed into one syllable. In some modern accents, the ll may sound closer to a y sound.

So do not worry if it feels difficult at first: vull is one of those words learners usually need to practice a few times.

In most modern Catalan accents, b and v are pronounced the same or almost the same.

So vull usually begins with a b-like sound.

That means:

• b and v are usually not strongly distinguished in speech
• the spelling still keeps them separate
• some speakers, especially in certain Valencian or Balearic varieties, may preserve more of a distinction

For a learner, the safest default is:

• pronounce v much like b

Yes. The simplest way is to add jo for emphasis:

• Jo vull saber la veritat.

This sounds more forceful, like:

• I want to know the truth.

You can also make it sound emotionally stronger with intonation, especially in speech.

But the original sentence, Vull saber la veritat, is already perfectly natural and can sound strong depending on context.