Mater dicit pactum bonum inter vicinas servandum esse.

After verbs of saying, thinking, knowing, and similar verbs, Latin often does not use a separate word for that. Instead, it uses the accusative-and-infinitive construction, also called indirect statement.

So in:

Mater dicit pactum bonum inter vicinas servandum esse

the part

pactum bonum inter vicinas servandum esse

means something like that a good agreement among the neighbors must be kept.

Instead of that + finite verb, Latin uses:

• a subject in the accusative
• plus an infinitive

That is why the sentence does not need a separate word for that.

Because it is the subject of the infinitive inside an indirect statement.

In English, we say:

• Mother says that the agreement must be kept.

In Latin, after dicit, the clause becomes an infinitive construction, and the subject of that infinitive goes into the accusative:

• pactum ... servandum esse

So pactum is not the direct object of dicit in the ordinary sense. It is the accusative subject of servandum esse.

This is a very common Latin pattern:

• dicit puerum venire = he says that the boy is coming

Here puerum is accusative because it is the subject of venire in indirect statement. The same thing is happening with pactum.

Servandum esse is a gerundive + esse construction, often called the passive periphrastic.

It expresses necessity, obligation, or something that ought to be done.

So:

• servare = to keep, preserve, observe
• servandum = needing to be kept / to be kept
• servandum esse = to have to be kept / must be kept

Because it is inside indirect statement after dicit, the whole phrase means:

• says that it must be kept

So pactum ... servandum esse means:

• that the agreement must be kept

Because they all agree with pactum.

Pactum is:

• neuter
• singular
• accusative

So words describing it must match those features:

• pactum = agreement
• bonum = good
• servandum = needing to be kept / to be kept

All three are neuter singular accusative.

So the structure is:

• pactum = the agreement
• bonum = good
• servandum = to be kept / that must be kept

This agreement is very important in Latin, because Latin relies heavily on endings.

Because the preposition inter takes the accusative case.

So:

• inter vicinas = between/among the female neighbors

Even though English uses between or among without changing the noun, Latin requires the accusative after inter.

That is why you get:

• inter + accusative

not:

• inter + ablative

So vicinas is accusative plural because it is the object of inter.

Vicinas is the feminine plural accusative of vicina, meaning female neighbor.

Here it is being used substantively, which means the adjective or noun-form can stand on its own without another noun being stated. So vicinas by itself means:

• the female neighbors
• or more naturally, the neighboring women

So inter vicinas means:

• among the female neighbors
• between the women who are neighbors

If the context were mixed or masculine, Latin might use a different form. But here the sentence specifically uses the feminine plural.

The construction servandum esse often allows the person under obligation to be expressed in the dative, but that person is not stated here.

For example, Latin can say things like:

• mihi hoc faciendum est = I must do this
• literally, this is to be done by/for me

In your sentence, no such dative appears. So the obligation is left general or understood from context:

• the agreement must be kept
• the agreement ought to be observed

This is very normal. Latin does not always name the responsible person if it is obvious, unimportant, or meant to be general.

Mater is the subject of dicit.

So the main clause is simply:

• Mater dicit = Mother says

Everything after that is the content of what she says:

• pactum bonum inter vicinas servandum esse

So the sentence has two parts:

1. Mater dicit — the main statement
2. pactum bonum inter vicinas servandum esse — the indirect statement

That is why mater is nominative: she is the one doing the speaking.

Latin word order is much more flexible than English word order because the endings show the grammatical relationships.

English depends heavily on position:

• The mother says the agreement must be kept

Latin can move words around more freely, because case endings and verb forms already show what each word is doing.

In this sentence, Latin places the infinitive phrase toward the end:

• Mater dicit pactum bonum inter vicinas servandum esse

This is a natural Latin arrangement. A Roman could also reorder parts for emphasis, for example putting bonum or inter vicinas in a different place, and the sentence would still be understandable.

So the unusual order is not wrong or strange; it is just normal Latin style.

It could suggest either, depending on context.

Bonus, bona, bonum can mean:

• good
• proper
• beneficial
• sound
• favorable

So pactum bonum could mean:

• a good agreement in the sense of a fair or wise agreement
• or a beneficial agreement
• or even simply a proper agreement

Without more context, it is safest to understand it broadly as a good agreement.

Yes. Pactum comes from the idea of something agreed upon. It can mean:

• agreement
• compact
• pact
• bargain
• treaty

In English, pact sounds a bit formal, but in Latin pactum is a perfectly normal word for an agreement or arrangement between parties.

So in this sentence, agreement is a very natural translation.