Italian Phrase
Si sente un gran rumore.
Meaning
The sentence means “A loud noise is heard” or “You can hear a loud noise.” It uses the impersonal construction with 'si' to describe a sound that is happening without naming who is hearing it.
When to use
Use this phrase when you want to comment on a sudden or noticeable noise in the environment – for example, hearing a car crash, a construction site, or a crowd cheering. It’s also common in news reports or storytelling to set the scene.
✦Grammar Breakdown
Sisenteungranrumore
Impersonal 'si'
The pronoun 'si' creates an impersonal construction, similar to the English passive 'is heard'. It does not refer to a specific subject.
Verb 'sentire' (present)
'sente' is the third‑person singular present of 'sentire' (to hear/feel). In the impersonal form it translates as 'is heard'.
Elided adjective 'gran'
'Gran' is the shortened form of 'grande' used before a singular noun starting with a consonant, meaning 'big' or 'loud' here.
Indefinite article 'un'
'Un' introduces a non‑specific masculine singular noun.
🗨In Conversation
Hai sentito quel botto?
Did you hear that bang?
Sì, si sente un gran rumore fuori dalla finestra.
Yes, a loud noise can be heard outside the window.
✕Common Mistakes
Si sente un grande rumore.
When the adjective precedes a singular noun starting with a consonant, 'grande' is shortened to 'gran'.
Sente un gran rumore.
Without the impersonal 'si', the sentence would mean 'He/she hears a loud noise', changing the meaning.
Si sente un gran rumori.
The noun must agree in number; 'rumore' is singular, so the article and adjective stay singular.
↔Alternatives
C'è un forte rumore.
There is a loud noise.
Si sente un rumore forte.
A strong noise is heard.
Si sente un gran frastuono.
A huge racket is heard.
Cultural Tip
Impersonal 'si' is extremely common in Italian for describing natural phenomena, sounds, and actions that happen without a clear agent (e.g., 'si dice', 'si vede'). The shortened adjective 'gran' is preferred in spoken and informal written Italian; in formal writing you would keep the full 'grande'. Also, Italians often use onomatopoeic words like 'boom' or 'clac' alongside this structure to convey the character of the noise.