L'anagramma nasconde un indizio.

Because l' is the shortened form of the definite article used before a vowel.

Here, the full article would be lo, because anagramma is a masculine singular noun. Before a vowel, lo becomes l':

• lo anagramma → l'anagramma

This is similar to:

• l'amico = the friend
• l'uomo = the man

So l'anagramma means the anagram.

Yes. Anagramma is masculine, even though it ends in -a.

That is unusual, since many Italian nouns ending in -a are feminine, but some words of Greek origin ending in -ma are masculine:

• il problema
• il programma
• il sistema
• l'anagramma

So you say:

• l'anagramma
• un anagramma

not:

• la anagramma
• una anagramma

Nasconde means hides or is hiding.

It comes from the verb nascondere = to hide.

In this sentence, nasconde is:

• third person singular
• present tense

So:

• l'anagramma nasconde = the anagram hides

A few related forms:

• nascondo = I hide
• nascondi = you hide
• nasconde = he/she/it hides
• nascondono = they hide

Because un is the masculine singular indefinite article used before most consonants and vowels.

Uno is only used before certain special sounds, such as:

• z: uno zaino
• s + consonant: uno studente
• gn: uno gnomo
• ps: uno psicologo

Since indizio begins with a normal vowel sound, you use un:

• un indizio = a clue

Not:

• uno indizio

Indizio usually means clue, hint, or sign that helps you figure something out.

In many contexts, clue is the best translation. It can also have a slightly more investigative sense, like a piece of evidence or an indication.

For example:

• un indizio importante = an important clue
• seguire un indizio = to follow a clue

So in this sentence, un indizio is a very natural way to say a clue.

Yes. It follows the standard Italian order:

• subject: L'anagramma
• verb: nasconde
• object: un indizio

So it is a straightforward subject + verb + object sentence, just like:

• Il libro contiene una mappa.
• Il messaggio rivela un segreto.

You can sometimes change word order in Italian for emphasis, but this version is the neutral, natural one.

A rough pronunciation guide is:

lan-a-GRAM-ma na-SCON-de oon in-DEE-tsyo

A few helpful details:

• anagramma has the stress on gram
• nasconde has the stress on scon
• indizio has the stress on di
• z in indizio sounds like ts

More naturally:

• l'anagràmma nascónde un indìzio

Normally, no. In standard Italian, a singular countable noun used as the subject usually needs an article or another determiner.

So:

• L'anagramma nasconde un indizio. = correct

But:

• Anagramma nasconde un indizio. = not normal standard Italian

You would only leave out the article in special contexts, such as titles, dictionary entries, labels, or very unusual stylistic writing.

It can mean either, depending on context.

Italian present tense often covers both:

• hides
• is hiding

So L'anagramma nasconde un indizio could mean:

• The anagram hides a clue
• The anagram is hiding a clue

In most cases, the simple English present hides is the best translation.