Infans in gremio matris quiete dormit.

Infans is nominative singular, so it is the subject of the sentence.

We know it is the subject because it is the noun doing the action of dormit: the baby is the one sleeping.

Its dictionary form is infans, infantis, a third-declension noun.

Because after in, Latin uses different cases depending on the meaning:

• in + ablative = in / on somewhere, showing location
• in + accusative = into / onto, showing motion toward

Here the baby is already resting in the mother's lap, so Latin uses the ablative: in gremio.

If there were movement into the lap, you would expect in gremium.

Matris is the genitive singular of mater, meaning of the mother or the mother's.

So:

• gremio = lap
• matris = of the mother

Together, in gremio matris means in the mother's lap.

This is a very common Latin way to show possession.

Latin usually expresses that idea with the genitive case rather than a separate possessive form like English mother's.

So English says:

• the mother's lap

Latin says:

• gremium matris = literally lap of the mother

Both mean the same thing; Latin just uses case endings where English often uses word order or 's.

Here quiete is an adverb, meaning quietly, peacefully, or calmly.

It modifies dormit, telling us how the baby sleeps.

A native English speaker may wonder if it is an adjective, but it is not describing infans. If it were an adjective describing the baby, it would need to agree with infans. Instead, it describes the action of sleeping.

Many Latin adjectives of the first and second declensions form adverbs in -e.

For example:

• clarus → clare = clearly
• laetus → laete = happily
• quietus → quiete = quietly

So quiete dormit means sleeps quietly.

Dormit is:

• third person singular
• present tense
• active voice
• indicative mood

It comes from dormio, dormire, meaning to sleep.

So dormit means he/she/it sleeps or is sleeping.

In Latin, the present tense can often cover both English ideas:

• sleeps
• is sleeping

Because Latin has no articles.

So Latin does not have separate words for:

• the
• a
• an

That means infans can mean:

• the baby
• a baby
• the infant
• an infant

The exact choice in English depends on the context.

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

This sentence puts the words in a very natural Latin order:

• Infans — subject first
• in gremio matris — place
• quiete — manner
• dormit — verb at the end

That said, Latin could rearrange the sentence for emphasis. For example, moving quiete earlier or dormit earlier would still be understandable, though the emphasis might change.

So the order here is not the only possible order, but it is a very normal one.

Not always.

Infans originally means not speaking, and it can refer to:

• a baby
• an infant
• a very young child

In this sentence, because the child is sleeping in the mother's lap, baby or infant is a very natural translation.

It can be either, depending on the child.

The noun infans can refer to a male or female infant. The form itself does not tell you which one here. If Latin wanted to make the sex clear, it could do so through context or through agreeing adjectives.

So in this sentence, the child is simply an infant / baby, without the sex being specified.