Cuncti amici rident.

Cuncti means all or all together. In this sentence it describes amici, so cuncti amici means all the friends.

It is a masculine plural nominative form, chosen to match amici.

Latin often uses an adjective together with the noun it modifies, especially for clarity. Here:

• cuncti = all
• amici = friends

So the full phrase is all the friends.

Sometimes Latin can leave the noun out if it is obvious from context, but in this sentence both words are stated.

Both cuncti and amici are nominative plural masculine.

You can tell because:

• amici is the nominative plural of amicus (friend)
• cuncti is the nominative plural masculine of cunctus (all, entire)

They are in the nominative because they are the subject of the verb rident.

In Latin, adjectives agree with the nouns they describe in:

• gender
• number
• case

Since amici is masculine, plural, and nominative, cuncti must also be masculine, plural, and nominative.

That agreement is one of the key features of Latin grammar.

Rident is the 3rd person plural present active indicative of rideo, ridere, meaning to laugh.

So rident means:

• they laugh
• they are laughing

Because the verb ending already shows the subject is they, Latin does not need a separate word for they.

In Latin, -nt is the normal ending for a 3rd person plural verb in the present tense.

So:

• ridet = he/she/it laughs
• rident = they laugh

Since the subject is cuncti amici (all the friends), the plural verb rident is required.

Latin has no definite article like English the, and no indefinite article like a or an.

So amici can mean:

• friends
• the friends

The exact English translation depends on context. In this sentence, cuncti amici is naturally understood as all the friends or all friends.

Yes. Latin word order is much freer than English word order because the endings show how the words function.

So all of these can mean roughly the same thing:

• Cuncti amici rident.
• Amici cuncti rident.
• Rident cuncti amici.

That said, changing the order can change emphasis. The original sentence is a simple, neutral way to say it.

Yes, omnes amici can also mean all the friends.

There can be slight differences in tone depending on context:

• omnes is very common for all
• cuncti can sound a little more emphatic, like all together or every one of them

In many beginner-level contexts, they are translated the same way.

Grammatically, amici is masculine plural. It can refer to:

• a group of male friends
• a mixed group of male and female friends

If the group were entirely female, Latin would normally use:

• amicae = female friends
• cunctae amicae = all the female friends

It is present tense, but English can translate that in more than one way.

So rident may be rendered as:

• they laugh
• they are laughing

Latin present tense often covers both the simple present and the present progressive that English distinguishes.

A common classroom pronunciation would be roughly:

KOONK-tee ah-MEE-kee REE-dent

More specifically:

• cuncti = KOONK-tee
• amici = ah-MEE-kee
• rident = REE-dent

In restored classical pronunciation:

• c is always hard, like k
• i is pronounced like ee
• r is trilled or tapped if possible

The dictionary forms are:

• cunctus, cuncta, cunctum = all, whole
• amicus, amici (m.) = friend
• rideo, ridere, risi, risum = laugh

In the sentence, those dictionary forms have been changed to fit their grammatical roles.

No. Here amici is a noun meaning friends, not an adjective meaning friendly.

So cuncti amici rident means all the friends laugh, not all friendly people laugh.

To express friendly in Latin, you would use a different word or structure.