A religação foi rápida.

Religação is a noun meaning reconnection, restoration, or turning something back on again.

In Brazilian Portuguese, it is especially common in service contexts like:

• electricity: restoring power after a cutoff
• water or gas: reconnecting service
• internet or phone service: restoring access

It comes from the verb religar, which means to reconnect, to reconnect something, or to turn something back on depending on the context.

A is the feminine singular definite article, meaning the.

It appears because religação is a feminine noun:

• a religação
• a conexão
• a ligação

In this sentence, using the article sounds natural because we are talking about a specific reconnection that both speaker and listener know about.

Without the article, the sentence would usually sound less natural in normal conversation, though it might appear in headlines or technical notes.

A very useful clue is the ending -ção. Nouns ending in -ção are almost always feminine in Portuguese.

So:

• a religação
• a conexão
• a informação
• a situação

Because the noun is feminine, anything that agrees with it also becomes feminine, which is why the adjective is rápida, not rápido.

Because rápida is describing religação, and adjectives in Portuguese usually agree in gender and number with the noun they describe.

Here:

• religação = feminine singular
• so the adjective must be rápida = feminine singular

Compare:

• O processo foi rápido.
• A religação foi rápida.
• As religações foram rápidas.

This is a very important agreement pattern in Portuguese.

Foi is the preterite form of ser for ele/ela/você.

Here, foi rápida means something like was quick in the sense of a completed event. The reconnection happened, and the speaker is looking at it as finished.

This is natural because a reconnection is usually a specific event with a clear endpoint.

This is a very common question.

• foi = completed event, seen as a whole
• era = ongoing background description, habitual situation, or a more open-ended past description

So:

• A religação foi rápida.
  = The reconnection happened and it was quick.

• A religação era rápida.
  = Reconnection used to be quick / was generally quick / was quick by nature

In this sentence, foi is the natural choice because it refers to one specific reconnection that has already been completed.

Yes. In foi rápida, the adjective is acting as a predicate adjective after the linking verb ser.

The structure is:

• A religação = subject
• foi = linking verb
• rápida = adjective describing the subject

This works like:

• O serviço foi bom.
• A resposta foi clara.
• A religação foi rápida.

So rápida is not directly next to the noun, but it still describes it through the verb ser.

Yes, especially in formal, technical, customer service, and utility company contexts.

You will often see it in phrases like:

• taxa de religação = reconnection fee
• pedido de religação = reconnection request
• prazo para religação = reconnection time frame

In everyday speech, people may also say things in other ways depending on the service:

• A luz voltou rápido.
• Religaram a energia rápido.
• A internet voltou rapidinho.

So religação is common, but it can sound a bit more official or administrative.

Yes, in some contexts.

Reconexão also means reconnection, and it is common in technology contexts such as:

• internet
• computer networks
• Bluetooth
• apps or systems

Religação is often more common for utility/service restoration, such as electricity, water, or phone service after suspension.

So both can mean something similar, but the preferred word can depend on the context.

A rough tendency:

• religação = restoring a service
• reconexão = reconnecting a connection, especially technical/digital

A simple pronunciation guide would be:

a heh-lee-gah-SOWN foy HAH-pee-dah

A few helpful notes:

• religação is stressed on the last syllable: -ção
• the r at the beginning of religação is usually pronounced with a Brazilian h-like sound
• ção has a nasal sound, something like sown but nasalized
• rápida has stress on rá

A more approximate sound in Brazilian Portuguese is:

a heh-lee-gah-SÃO foy HAH-pee-da

Usually, in normal speech, you would keep it:

• A religação foi rápida.

Dropping the article is uncommon in an ordinary sentence like this. However, omission can happen in:

• headlines
• bullet points
• technical reports
• note-style writing

For example:

• Religação foi rápida might appear in a short note, but it sounds less natural in everyday spoken Portuguese.

So for a learner, the safest and most natural version is definitely:

• A religação foi rápida.

Yes, a little.

Using religação makes the sentence sound somewhat neutral, administrative, or service-related, especially compared with more conversational alternatives.

For example:

• A religação foi rápida.
  sounds neutral/formal
• Ligaram de novo rapidinho.
  sounds much more conversational
• A luz voltou rápido.
  sounds very everyday and natural in many contexts

So the original sentence is perfectly normal, but its tone feels a bit more like customer service, billing, utilities, or service updates.