Quotiens siparium cadit, totiens pantomimus e proscaenio exit.

Not here. By itself, quotiens? can ask a question: how often? But in this sentence it introduces a clause and is matched with totiens, so it means as often as or whenever.

So Quotiens siparium cadit means whenever the curtain falls or more literally as often as the curtain falls.

Latin likes correlative pairs, and quotiens ... totiens is one of them:

• quotiens = as often as
• totiens = so often / that many times

So the structure is literally As often as the curtain falls, so often the pantomime actor exits.

In natural English, we often do not repeat the second half, and simply say Whenever the curtain falls, the actor exits. But in Latin, totiens neatly completes the pattern.

siparium is nominative singular, the subject of cadit.

A native English speaker often expects a subject to look different from an object, but with neuter second-declension nouns, nominative singular and accusative singular are both -um. So siparium can be either subject or object depending on the sentence.

Here it is the subject because cadit is intransitive: the curtain itself falls.

cadit is:

• 3rd person singular
• present tense
• indicative mood
• active voice

from cadere, meaning to fall.

So cadit means it falls.

Because the sentence describes a repeated or habitual situation: whenever X happens, Y happens.

Latin often uses the present tense for this kind of general statement, just as English does:

• Whenever the bell rings, the students leave.
• Quotiens siparium cadit, totiens pantomimus e proscaenio exit.

So the present here does not mean only right now; it can also describe what regularly happens.

Because the sentence is talking about an actual repeated event, not a doubtful, imagined, or purpose-based one.

The clause with quotiens here means something like whenever the curtain falls, describing a real occurrence. That is why cadit is indicative. The main verb exit is also indicative for the same reason.

So this is a straightforward factual pattern, not a hypothetical one.

pantomimus is nominative singular masculine, and it is the subject of exit.

It is a second-declension noun, so the -us ending is the normal nominative singular ending for that type of masculine noun.

No. In Latin, exit is a verb form, not a noun.

It comes from exire, meaning to go out. So exit means he goes out, she goes out, or it goes out, depending on the subject.

Here it means the pantomime actor goes out / exits.

Because e/ex means out of or from, and it takes the ablative case.

So:

• proscaenium = dictionary form
• proscaenio = ablative singular

The phrase e proscaenio means from the stage or from the proscenium.

This is the normal Latin way to show motion away from a place.

e and ex are just two forms of the same preposition.

Both mean out of / from. Very often:

• e appears before consonants
• ex appears before vowels or h

But Latin usage is not perfectly rigid, and authors may vary. Here e proscaenio is completely normal.

Latin has no articles. It does not have separate words for the, a, or an.

So whether you translate siparium as the curtain or a curtain, and pantomimus as the pantomime actor or a pantomime actor, depends on the context, not on a special article word.

The word order is meaningful, but it is not as rigid as in English.

A few things stand out:

• Quotiens comes first to introduce the subordinate clause.
• totiens comes early in the main clause to match quotiens.
• exit is placed at the end, which is very common for Latin verbs.

So the sentence is arranged for clarity and balance, especially the paired quotiens ... totiens structure. Latin endings, not word order alone, tell you which word is the subject and which words belong together.