La antaŭfilmo ne malkaŝas la timigan intrigon.

The -n marks the direct object in Esperanto.

In this sentence:

• La antaŭfilmo = the trailer
• malkaŝas = reveals
• la timigan intrigon = the frightening plot

The thing being revealed is the plot, so intrigo becomes intrigon.

This is called the accusative ending. Esperanto uses it very regularly, unlike English, which mostly relies on word order.

Because adjectives must agree with the noun they describe.

Here:

• intrigo = plot
• intrigon = plot as a direct object
• timiga = frightening
• timigan = frightening, matching a direct object noun

Since intrigon has -n, the adjective describing it also gets -n:

• la timiga intrigo = the frightening plot
• la timigan intrigon = the frightening plot, as the direct object

This agreement is a very important feature of Esperanto.

Timiga means frightening or scary in the sense of causing fear.

It is built like this:

• tim- = fear
• -ig- = to cause or make
• -a = adjective ending

So timiga literally means fear-causing.

By contrast:

• tima means afraid or fearful
• timiga means frightening

So:

• tima homo = a fearful person
• timiga filmo = a frightening movie

The prefix mal- gives the opposite meaning of a root.

Here:

• kaŝi = to hide
• malkaŝi = to un-hide, reveal, disclose

Then:

• malkaŝas = reveals / is revealing

This is one of the most common and useful patterns in Esperanto. For example:

• bona = good
• malbona = bad

So malkaŝi is a very natural Esperanto word meaning to reveal.

It is a compound word:

• antaŭ = before
• filmo = film

So antaŭfilmo literally means something like before-film.

In actual usage, it means trailer or preview, the short promotional video shown before a movie or released in advance.

Esperanto often forms words this way, by combining meaningful parts into a single compound.

Ne is the normal word for not in Esperanto, and it usually goes before the part it negates.

So:

• malkaŝas = reveals
• ne malkaŝas = does not reveal

That is the standard way to make a sentence negative.

-as is the present-tense verb ending in Esperanto.

So:

• malkaŝi = to reveal
• malkaŝas = reveals / is revealing / does reveal

Esperanto verbs do not change depending on the subject:

• mi malkaŝas = I reveal
• vi malkaŝas = you reveal
• la antaŭfilmo malkaŝas = the trailer reveals

The ending stays the same.

Because there are two separate noun phrases, and each one can take its own definite article.

• La antaŭfilmo = the trailer
• la timigan intrigon = the frightening plot

English also does this:

• The trailer does not reveal the frightening plot

Esperanto has only one definite article, la, and it does not change for gender, number, or case.

Yes, Esperanto allows more flexibility in word order than English because the -n ending shows the direct object clearly.

The normal order here is:

• La antaŭfilmo ne malkaŝas la timigan intrigon.

But other orders are possible, especially for emphasis, such as:

• La timigan intrigon la antaŭfilmo ne malkaŝas.

That said, for learners, the standard subject–verb–object order is usually best unless there is a reason to emphasize something.

Because it does not have the accusative -n, and it is the thing performing the action.

Compare:

• La antaŭfilmo = the trailer
• la timigan intrigon = the frightening plot, marked as the object by -n

So the trailer is doing the revealing, and the plot is what would be revealed.

They are related, but you should be careful.

In Esperanto, intrigo often means plot, especially in a story, movie, or novel. In some contexts it can also mean scheme or intrigue, depending on usage.

In this sentence, la timigan intrigon clearly means the frightening plot of the film or story.

So even though the words look similar, the most natural English translation here is probably plot, not intrigue.

Antaŭ is pronounced roughly like ahn-tow, where aŭ sounds like the ow in cow.

A rough breakdown:

• an = like ahn
• taŭ = like tow with the ow of cow

So antaŭfilmo is roughly:

• ahn-TOW-FEEL-mo

As always in Esperanto, pronunciation is very regular once you know the sound of each letter.