O despiste confirmou a avaria elétrica.

Here, despiste most likely means a check, diagnostic investigation, or process of ruling out possibilities.

In European Portuguese, despiste is often used in medical, technical, or investigative contexts. So in this sentence, it is not about someone being distracted. It refers to some kind of examination or troubleshooting process that led to a conclusion.

A useful thing to know is that despiste can have other meanings in other contexts, but in this sentence the technical/investigative sense is the natural one.

Because despiste is a masculine noun in Portuguese, so it takes the masculine singular article o.

Portuguese noun gender is not always predictable from the ending. Even though despiste ends in -e, it is masculine:

• o despiste

So this is something you usually learn together with the noun:

• o despiste
• a avaria

Confirmou is the pretérito perfeito simples in Portuguese, which usually corresponds to the simple past in English.

It comes from the verb confirmar:

• eu confirmei
• tu confirmaste
• ele/ela/você confirmou
• nós confirmámos
• vós confirmastes
• eles/elas/vocês confirmaram

So confirmou means confirmed.

In this sentence, it shows a completed past action: the diagnostic check finished, and it confirmed the fault.

The subject is o despiste.

So the structure is:

• O despiste = subject
• confirmou = verb
• a avaria elétrica = direct object

That means the sentence is active, not passive. Portuguese often allows processes, reports, tests, or results to act as the subject, just as English does in sentences like The test confirmed the fault.

Because avaria is a feminine singular noun, so it takes:

• the feminine singular article a
• the feminine singular adjective elétrica

So everything agrees:

• a = feminine singular article
• avaria = feminine singular noun
• elétrica = feminine singular adjective

This is a basic agreement pattern in Portuguese.

Because in Portuguese, adjectives often come after the noun.

So:

• avaria elétrica = electrical fault

This is the normal order here. English usually puts this kind of adjective before the noun, but Portuguese commonly places it after.

You will see this pattern a lot:

• problema grave
• falha técnica
• avaria elétrica

The accent in elétrica shows the stressed syllable and helps indicate pronunciation.

It also distinguishes the correct written form of the word. The feminine form is:

• elétrica

The masculine singular form is:

• elétrico

Because it agrees with avaria, which is feminine, the sentence uses elétrica.

So:

• avaria elétrica
• problema elétrico

In some contexts, Portuguese can omit articles, but in this sentence the articles sound natural and expected:

• O despiste confirmou a avaria elétrica.

Using o and a makes the sentence sound like it is referring to a specific diagnostic check and a specific electrical fault.

Portuguese uses definite articles more often than English does, so learners should not expect article use to match English exactly.

Yes, very often. Confirmar is a close equivalent of to confirm.

In a sentence like this, it means that the check or diagnosis showed that the electrical fault was indeed present.

Depending on context, English might also use:

• confirmed
• verified
• showed
• established

But confirmed is a very direct match.

Yes. Portuguese offers several natural alternatives, depending on style and emphasis. For example:

• O despiste confirmou a avaria elétrica.
• O despiste confirmou que havia uma avaria elétrica.
• A avaria elétrica foi confirmada pelo despiste.

The original sentence is compact and technical. It sounds like something you might read in a report, diagnostic note, or formal description.

It sounds somewhat technical or formal, mainly because of despiste and avaria elétrica.

In more casual speech, people might choose simpler wording depending on the situation, such as talking about:

• um problema elétrico
• uma falha elétrica

But the original sentence is perfectly natural in contexts like maintenance, engineering, mechanics, diagnostics, or written reports.