Riferisce tutto con calma.

Riferisce comes from the verb riferire.

In this sentence, it is:

• present indicative
• third person singular

So it can mean:

• he reports / tells / relates
• she reports / tells / relates
• it reports (less common depending on context)
• or you report if it is the formal Lei form

So grammatically, riferisce is one single form that can match more than one English subject.

Italian often leaves out subject pronouns when the verb ending already makes the person clear. This is called a pro-drop language.

Because riferisce is a singular form, Italian does not need to say:

• Lui riferisce tutto con calma
• Lei riferisce tutto con calma

unless the speaker wants to add emphasis, contrast, or clarity.

So the subject is simply understood from context.

Yes. In Italian, the formal you is Lei, and it uses third person singular verb forms.

So Riferisce tutto con calma could also mean:

• You report everything calmly if the speaker is addressing someone formally.

Without context, riferisce could refer to:

• he
• she
• formal you

Here, riferire means something like:

• to report
• to relate
• to recount
• to tell back

It is often used when someone is giving information, reporting events, or passing on what happened.

Depending on context, riferire can also mean to refer in some situations, but in this sentence, with tutto, the sense is clearly reporting / recounting everything.

Because tutto here means everything, as a singular idea.

Compare:

• tutto = everything
• tutti = everyone or all of them (masculine plural)

So in Riferisce tutto con calma, tutto is a direct object meaning everything.

Examples:

• Sa tutto = He/She knows everything
• Dice tutto = He/She says everything

Italian often prefers a prepositional phrase like con calma where English might use an adverb such as calmly.

So:

• con calma literally means with calm
• but naturally it means calmly or in a calm way

Both structures can exist in Italian, but con calma is extremely common and sounds very natural.

Compare:

• Parla con calma = He/She speaks calmly
• Parla calmamente = also possible, but often a little more formal or less everyday in tone

Not necessarily. Con calma can suggest:

• in a calm manner
• without rushing
• patiently
• without agitation

So it can describe both:

1. someone’s emotional state, and/or
2. the way they do something

In many everyday contexts, it can feel close to slowly and without stress, not just peacefully.

This is a very normal Italian word order:

• verb: riferisce
• object: tutto
• manner phrase: con calma

Italian word order is flexible, but this order is neutral and natural.

You could also say:

• Con calma, riferisce tutto
• Riferisce con calma tutto

But the original version sounds straightforward and standard.

Yes, that is grammatically possible.

• Riferisce tutto con calma
• Riferisce tutto calmamente

Both are correct, but con calma usually sounds more natural and conversational in everyday Italian.

Calmamente is not wrong at all; it just may sound a little more literary, deliberate, or formal depending on context.

Here, tutto is functioning as a pronoun, because it stands alone and means everything.

Compare:

• Riferisce tutto = He/She reports everything
  → tutto is a pronoun

• Riferisce tutto il fatto = He/She reports the whole घटना / whole event
  → there tutto would act more like an adjective modifying a noun

In your sentence, since there is no noun after it, tutto means everything by itself.

Riferire is a -ire verb, but it behaves like verbs that add -isc- in some present-tense forms.

That is why you get:

• io riferisco
• tu riferisci
• lui/lei/Lei riferisce
• noi riferiamo
• voi riferite
• loro riferiscono

So the -isc- appears in:

• io
• tu
• lui/lei/Lei
• loro

but not in:

• noi
• voi

This is a very common pattern in Italian -ire verbs.

Yes, it does. It sounds like a normal, natural sentence.

It would fit well in contexts such as:

• describing how someone tells a story
• saying that someone reports the facts calmly
• noting that a person explains everything without getting upset

So grammatically and stylistically, it is perfectly ordinary Italian.