Feles cellarium ingreditur et murem quaerit.

Feles is in the nominative singular, which is the case normally used for the subject.

In this sentence, both verbs — ingreditur and quaerit — are third person singular, so they match a singular subject: the cat.

So the basic structure is:

• feles = the cat, the subject
• ingreditur = enters
• quaerit = looks for / seeks

Because Latin marks grammatical roles with endings, the subject does not have to come first, but here it does.

They are both in the accusative singular.

In this sentence:

• cellarium is the thing the cat enters
• murem is the thing the cat seeks

The accusative case is very commonly used for the direct object of a verb.

So:

• cellarium = the cellar as object of ingreditur
• murem = the mouse as object of quaerit

The ending -m is a very common sign of the accusative singular in Latin, though not every noun uses it in exactly the same way.

Because the verb ingredior often takes a direct object in the accusative without a preposition.

In English, learners may expect something like goes into the cellar, but Latin often says simply the cellar enters in structure — that is, enters the cellar.

So:

• cellarium ingreditur = enters the cellar

This is normal Latin usage with verbs of entering. Latin does not always need a separate word like into where English does.

Because ingreditur comes from a deponent verb: ingredior, ingredi, ingressus sum.

Deponent verbs are a special group in Latin:

• they have passive-looking forms
• but active meanings

So although ingreditur looks like a passive form to a beginner, it actually means:

• he/she/it enters

not

• he/she/it is entered

This is one of the most important things to notice in the sentence.

Ingreditur is:

• present tense
• third person singular
• from the deponent verb ingredior

So it means:

• he enters
• she enters
• it enters

In this sentence, the subject is feles, so the natural translation is the cat enters.

Quaerit is:

• present tense
• third person singular
• active voice
• from quaero, quaerere = seek, look for, ask for

So murem quaerit means:

• he/she/it seeks the mouse
• or more naturally, looks for the mouse

It agrees with the same subject as ingreditur, namely feles.

Latin has no articles like English the and a/an.

So a noun like feles can mean:

• a cat
• the cat

and murem can mean:

• a mouse
• the mouse

Which one sounds best depends on context. In a simple sentence like this, English often uses the cat and the mouse, but Latin itself does not mark that distinction with a separate word.

Because both verbs are third person singular, and Latin commonly uses one subject for two verbs joined by et.

So the structure is:

• Feles ingreditur
• et quaerit

That means:

• The cat enters and seeks

Latin does not need to repeat feles before the second verb unless there is a special reason for emphasis or clarity.

Et simply means and.

It joins the two verb phrases:

• cellarium ingreditur
• murem quaerit

So the sentence has one subject, feles, and two actions connected by et:

• The cat enters the cellar and looks for the mouse.

No, Latin word order is often more flexible than English word order because the endings show each word’s role.

This sentence is written in a very straightforward order:

• subject: feles
• object + verb: cellarium ingreditur
• conjunction: et
• object + verb: murem quaerit

But Latin could rearrange the words for emphasis, for example:

• Murem feles cellarium ingreditur et quaerit
• Cellarium feles ingreditur et murem quaerit

Some orders are more natural than others, but the case endings help the reader identify what is subject and what is object.

Because mus is the dictionary form (the nominative singular), while murem is the accusative singular.

The noun is:

• mus = mouse, when it is the subject
• murem = mouse, when it is the direct object

Since the cat is looking for the mouse, the mouse is the object of quaerit, so Latin uses murem.

Yes. With ingredior, Latin treats the place entered as an accusative object.

So although an English speaker may think of the cellar as a place rather than an object, Latin grammar still uses the accusative here.

That is why:

• cellarium ingreditur = enters the cellar

This is a good example of how Latin and English do not always express motion in the same way.

Yes. Quaero has a range of related meanings, such as:

• seek
• look for
• ask for
• try to get

In this sentence, with murem, the most natural meaning is looks for or seeks.

So murem quaerit is best understood as:

• looks for the mouse
• or seeks the mouse

In reconstructed classical pronunciation, quaerit is approximately:

• KWAI-rit

A few helpful points:

• qu is pronounced like kw
• ae is usually like ai in aisle
• the e in the second syllable is short
• the i before t is like a short i

So quaerit sounds roughly like KWAI-rit.

In reconstructed classical pronunciation, ingreditur is approximately:

• in-GREH-di-toor

Helpful points:

• in as written
• gre with a hard g
• di with a short i
• tur with u like oo in put or a short Latin u sound, depending on how detailed your pronunciation system is

Most importantly, the g is always hard in classical Latin, so it is not like English ginger.

Feles is usually treated as a feminine noun in Latin, though in meaning it can refer to a cat of either sex unless the context makes it specific.

That is why, if you were replacing it with a pronoun in English, you might say the cat ... it enters or simply keep using the cat.

In this sentence, the grammatical gender does not change the translation of the verbs, because Latin present-tense verb forms like ingreditur and quaerit do not show masculine vs. feminine.

Probably these three:

1. Case endings matter

   • feles is the subject
   • cellarium and murem are accusative objects

2. Deponent verbs exist

   • ingreditur looks passive
   • but means enters, not is entered

3. Latin does not use articles

   • there is no separate word for the or a

So this short sentence teaches both a normal active verb (quaerit) and a deponent verb (ingreditur) in one example.