Il doppio fondo nasconde un indizio.

Il is the masculine singular definite article, meaning the.

So il doppio fondo means the double bottom or, more naturally in many contexts, the false bottom.

In Italian, articles are used very often, sometimes more often than in English. A full sentence like this normally needs the article before the noun unless you are speaking very generally or using a special style such as a label or headline.

Literally, doppio fondo means double bottom.

In real usage, it often refers to a false bottom in a suitcase, drawer, box, bag, or similar object: a hidden lower layer where something can be concealed.

So although the literal words are double + bottom, the practical meaning is often false bottom.

In Italian, adjectives can come before or after the noun, but the position can sound more natural or slightly change the feel.

Here, doppio fondo is the normal expression. It works almost like a set phrase.

• doppio fondo = the usual term
• fondo doppio would sound less standard in this meaning

So this is a good example where the word order should mostly be learned as a fixed expression.

It is masculine singular, because the main noun is fondo, which is masculine.

That is why you have:

• il doppio fondo

If it were plural, it would be:

• i doppi fondi = the false bottoms / double bottoms

The adjective doppio agrees with fondo, so both are masculine singular here.

Nasconde is the third-person singular present tense of nascondere = to hide.

The subject is il doppio fondo, which is singular, so the verb must also be singular:

• il doppio fondo nasconde = the false bottom hides

A quick mini-conjugation:

• io nascondo = I hide
• tu nascondi = you hide
• lui/lei nasconde = he/she/it hides
• noi nascondiamo = we hide
• voi nascondete = you all hide
• loro nascondono = they hide

Yes. In many cases, the Italian present tense can correspond to either:

• hides
• is hiding

depending on context.

So Il doppio fondo nasconde un indizio could be understood as:

• The false bottom hides a clue or
• The false bottom is hiding a clue

Usually, English chooses the version that sounds more natural in context.

Un is the masculine singular indefinite article, meaning a or an.

So:

• un indizio = a clue
• l’indizio = the clue

The sentence uses un indizio because it is introducing the clue as something not yet specifically identified.

Also note:

• indizio is masculine singular
• before a vowel, the indefinite article for a masculine noun is still un
• so: un indizio, not uno indizio

This is a very common vocabulary question.

• indizio = clue, hint, sign, something that suggests a conclusion
• prova = proof, evidence, something stronger and more conclusive

So an indizio points you in a direction, but it may not prove anything by itself.

Example:

• La polizia ha trovato un indizio. = The police found a clue.
• La polizia ha trovato una prova. = The police found proof / evidence.

A simple pronunciation guide is:

eel DOHP-pyoh FOHN-doh nahs-KOHN-deh oon een-DEE-tsyoh

A few useful notes:

• gli is not in this sentence, so no special issue there
• pp in doppio is a doubled consonant, so it is pronounced more strongly than a single p
• sc before o in nasconde sounds like sk, not like English sh
• zio in indizio sounds roughly like tsyo

A more Italian-like breakdown:

• Il = eel
• doppio = DOHP-pyoh
• fondo = FOHN-doh
• nasconde = nahs-KOHN-deh
• un = oon
• indizio = een-DEE-tsyoh

The normal order is:

Il doppio fondo nasconde un indizio.
= subject + verb + object

This is the most neutral and natural order.

Italian can change word order for emphasis, but not every rearrangement sounds equally normal. For example:

• Un indizio nasconde il doppio fondo would mean A clue hides the false bottom, which changes the meaning because the grammatical subject becomes un indizio
• Nasconde un indizio il doppio fondo is possible in a literary or emphatic style, but much less neutral

So for everyday learning, keep the standard order.

Yes. Nascondere can often be translated as:

• to hide
• to conceal

In this sentence, both work:

• The false bottom hides a clue
• The false bottom conceals a clue

Conceals sounds a little more formal or literary in English, while hides is more everyday.

The plural would be:

I doppi fondi nascondono indizi.

Word by word:

• il → i
• doppio → doppi
• fondo → fondi
• nasconde → nascondono
• un indizio → indizi

So:

• Il doppio fondo nasconde un indizio.
• I doppi fondi nascondono indizi.

If you wanted the clues, you would say:

• I doppi fondi nascondono gli indizi.

It is most commonly used for a physical false bottom, but depending on context it can also feel metaphorical, suggesting something hidden beneath the surface.

Still, the most straightforward interpretation is literal: a concealed compartment.

So if you see doppio fondo in a mystery, detective, or smuggling context, it very often refers to an actual hidden compartment.