A loucura terminou.

A is the definite article the in Portuguese for a singular feminine noun.

• a = the for feminine singular nouns
• o = the for masculine singular nouns

Since loucura is a feminine noun, it takes a:

• a loucura = the madness

In Portuguese, articles are often used more regularly than in English, so a sentence like this normally sounds more natural with a included.

Usually, nouns ending in -a are feminine, and loucura is one of them. So you say:

• a loucura
• not o loucura

The ending -a is a strong clue, but not an absolute rule for every Portuguese noun. In this case, though, loucura is definitely feminine.

Not always. Loucura can mean literal madness/insanity, but it is also very commonly used in broader or more expressive ways, such as:

• chaos
• craziness
• wildness
• a crazy situation

So A loucura terminou. could refer to actual madness, but it could also describe the end of a chaotic or absurd situation.

Terminou is the preterite form of terminar.

That means it expresses a completed past action:

• terminar = to end / to finish
• terminou = ended / finished / has ended, depending on context

This is the third person singular form, used with subjects like:

• ele = he
• ela = she
• você = you
• or a singular noun like a loucura

So here:

• A loucura terminou. = The madness ended.

These two forms express different ideas in the past.

• terminou = it ended, a completed event
• terminava = it was ending / used to end, more ongoing, descriptive, or habitual

In A loucura terminou., the speaker is presenting the end as a finished fact. It sounds like a clear endpoint was reached.

If you said A loucura terminava, it would usually need more context and would sound less complete on its own.

Yes, Terminou a loucura is also possible.

The standard word order here is:

• A loucura terminou.

That is the most neutral subject + verb order.

But Portuguese also allows:

• Terminou a loucura.

This version can sound a little more dramatic, literary, or focused on the fact that it ended.

So both are correct, but A loucura terminou. is the more straightforward basic pattern for learners.

Because Portuguese verbs do not agree with gender. They agree with person and number.

So the verb changes depending on whether the subject is:

• singular or plural
• first, second, or third person

But not masculine vs. feminine.

That is why you get:

• A loucura terminou.
• O problema terminou.

Even though loucura is feminine and problema is masculine, the verb form terminou stays the same because both subjects are third person singular.

The noun, article, and verb would all change for plural:

• As loucuras terminaram.

Breakdown:

• a → as
• loucura → loucuras
• terminou → terminaram

So Portuguese requires agreement between the subject and the verb in number.

Yes. Terminar is commonly used for both ideas.

It can mean:

• to end something
• to finish something
• to come to an end

Examples:

• O filme terminou. = The movie ended.
• Terminei o trabalho. = I finished the work.

In your sentence, terminou means came to an end.

A natural Brazilian Portuguese pronunciation is approximately:

• loh-KOO-rah

More closely:

• lou sounds a bit like loh with a glide
• cu is stressed: KOO
• ra is lighter and shorter than in English

And terminou is approximately:

• tehr-mee-NOH

with the stress on the last syllable: nou

So the whole sentence is roughly:

• a loh-KOO-ra tehr-mee-NOH

The r sound can vary by region in Brazil, especially at the beginning of a word or in certain positions, but this approximation is enough for a learner to get started.

Yes, it is natural and correct.

It sounds like a short, clear statement, especially in narration or in a situation where someone is saying that a period of chaos, madness, or confusion has ended.

Because it is so short, the exact tone depends on context. It could sound:

• serious
• dramatic
• relieved
• figurative

But grammatically and stylistically, it is perfectly normal Brazilian Portuguese.

Usually, that would sound unnatural in standard Portuguese.

Portuguese generally prefers the article here:

• A loucura terminou.

Without the article, loucura would sound less natural as the subject in an ordinary sentence. In poetry, headlines, or very stylized language, article omission can happen, but for normal usage, keep a.