inválido

The Portuguese word inválido is a multifaceted adjective that primarily functions to describe something that lacks legal force, logical consistency, or factual accuracy. To understand inválido, one must look at its Latin roots, where 'in-' serves as a negator and 'validus' means strong or powerful. Therefore, at its core, something that is inválido is something that 'lacks strength' or 'lacks the power to be recognized.' In modern Portuguese, this translates most frequently to contexts involving technology, law, and formal documentation. For an English speaker, the word is a cognate, meaning it looks and sounds very similar to the English word 'invalid.' However, the usage patterns in Portuguese require a nuanced understanding of gender agreement and specific situational application. When you encounter a digital error message, such as an incorrect password or an expired token, the system will almost certainly label the input as inválido. This signifies that the information provided does not meet the required criteria for acceptance.

Legal Context

In the legal sphere, inválido refers to contracts, laws, or evidence that cannot be upheld in a court of law due to a specific flaw, such as a missing signature or a violation of procedural rules.

Technological Context

In software and web development, this term is the standard response for data validation failures, such as an incorrectly formatted email address or an expired credit card number.

Beyond the technical and legal, the word also carries a logical weight. If someone presents an argument that is based on false premises or follows an illogical path, a Portuguese speaker might describe that reasoning as inválido. It is important to note that while the English 'invalid' can also refer to a person who is ill or disabled, the Portuguese inválido was historically used this way but is now increasingly replaced by more sensitive terms like 'pessoa com deficiência' or 'pessoa com mobilidade reduzida.' However, you will still see the term used in insurance contexts (invalidez) to refer to a permanent inability to work. When using the word, you must always remember that it is an adjective and must agree in gender and number with the noun it modifies. A masculine document is inválido, while a feminine password (senha) is inválida. This grammatical requirement is a common hurdle for English speakers who are accustomed to the gender-neutral 'invalid.'

In everyday conversation, the word is quite common when discussing bureaucracy. If you go to a government office in Brazil or Portugal with the wrong paperwork, the clerk might say, 'Este documento é inválido para este processo.' This immediately signals that you need to find a different form or update the current one. The word is also used in sports; for example, if a goal is scored after a foul, the referee will declare the goal inválido (though the term 'anulado' is more frequent in football). Understanding the breadth of inválido allows you to navigate both digital interfaces and formal social interactions with greater confidence. It is a word of negation, a word that sets boundaries on what is acceptable and what is not. By mastering its use, you gain a key tool for describing errors, legal nullities, and logical fallacies in the Portuguese-speaking world.

Common Usage: Passwords

Senha inválida. Tente novamente. (Invalid password. Try again.)

Using inválido correctly involves more than just knowing its definition; it requires an understanding of Portuguese syntax and the specific verbs it pairs with. Most commonly, inválido is used with the linking verbs ser (to be, permanent/intrinsic) and estar (to be, temporary/state). When a document is fundamentally flawed from its creation, we say 'O documento é inválido.' However, if a document was once valid but has since expired or been damaged, we might say 'O documento está inválido.' This distinction is subtle but important for reaching a high level of fluency. Furthermore, the adjective must always agree with the noun. This means you must be aware of the gender of common nouns like documento (masculine), senha (feminine), voto (masculine), and proposta (feminine).

Masculine Singular

O código inválido foi inserido no sistema.

Feminine Singular

A sua entrada é inválida para este evento.

In plural forms, the word becomes inválidos (masculine) or inválidas (feminine). For example, if you are discussing several incorrect passwords, you would say 'As senhas são inválidas.' This adjective often appears at the end of a sentence after a verb, but it can also directly follow the noun it describes, such as 'um cheque inválido' (an invalid check). Another important construction is the use of the verb tornar (to make/to render). You might say 'A falta de clareza torna a cláusula inválida.' This indicates a process where something that might have been acceptable is now rejected due to a specific condition. This is very common in legal and academic writing where logical outcomes are being described.

Let's look at how inválido interacts with different tenses. In the past tense, you might hear 'O teste foi inválido,' meaning the test was not accepted. In the future, 'Se você não assinar, o papel será inválido.' Notice how the adjective itself doesn't change for tense, only the verb it accompanies. This consistency makes it a reliable word to use once you have mastered the gender and number agreement. In more advanced contexts, inválido can be used substantively, though this is rare. For instance, 'O inválido da questão reside na premissa,' meaning 'The invalidity (the invalid part) of the question lies in the premise.' However, it is much more common to use the noun 'invalidade' for this purpose. Stick to using it as an adjective to describe nouns like arguments, documents, and digital inputs for the most natural-sounding Portuguese.

Masculine Plural

Estes comprovantes são inválidos para o reembolso.

Feminine Plural

As regras antigas são agora inválidas.

In the modern Lusophone world, you are most likely to encounter the word inválido through a digital interface. Whether you are using an app in Portuguese, browsing a Brazilian website, or trying to access a government portal in Portugal, the term 'senha inválida' (invalid password) or 'usuário inválido' (invalid user) is ubiquitous. This is the first place a learner will see the word in a high-stakes, practical environment. It serves as a clear, unambiguous signal that the data provided does not match the system's requirements. Beyond the screen, inválido is a staple of bureaucratic and legal life. If you are applying for a visa or a residency permit, you might hear a clerk say that a specific document is inválido because it lacks an apostille or a certified translation. In these settings, the word carries the weight of authority and procedural necessity.

Customer Service

Desculpe, este cupom de desconto já está inválido. (Sorry, this discount coupon is already invalid.)

Public Transport

O seu cartão de transporte deu erro como 'cartão inválido'.

You will also hear this word frequently in news broadcasts, especially during election cycles. In Brazil, for example, there is a distinction between 'voto em branco' (blank vote) and 'voto nulo' or 'voto inválido'. While 'nulo' is the more technical term used by the electoral courts, journalists often use inválido to describe any vote that does not count toward a candidate. Similarly, in the context of sports, specifically football, a commentator might describe a play as inválida if the referee blows the whistle for an offside or a foul before the ball enters the net. This usage emphasizes that the action, regardless of its physical outcome, has no standing within the rules of the game. Listening for these contexts helps you realize that inválido is not just a word for 'broken,' but a word for 'not meeting the rules.'

In academic and scientific settings, inválido is used to critique methodology. A researcher might state that a study's results are inválidos because the sample size was too small or the control group was contaminated. This highlights the word's connection to truth and reliability. If you are reading a Portuguese newspaper, look for the word in the 'Terms and Conditions' or 'Privacy Policy' sections that often appear at the bottom of websites. You will see phrases like 'Esta oferta é inválida onde for proibida por lei' (This offer is invalid where prohibited by law). This legalistic use is identical to the English 'void' or 'invalid.' By paying attention to these various domains—tech, law, sports, and academia—you will see how inválido acts as a universal gatekeeper for what is considered legitimate or correct.

News Headline

Supremo Tribunal Federal considera inválida a nova lei de impostos.

Daily Life

Este CPF é inválido; por favor, confira os números.

One of the most frequent errors English speakers make when using inválido is failing to adjust for gender. Because the English word 'invalid' never changes, students often forget that in Portuguese, the ending must match the noun. Saying 'a senha é inválido' is a classic mistake. Since 'senha' is feminine, the adjective must be inválida. This mistake is particularly common in digital contexts where users are translating 'Invalid password' directly in their heads. Another common error involves the pronunciation of the tonic syllable. In inválido, the stress is on the second syllable 'vá', indicated by the acute accent. English speakers often want to place the stress on the third syllable or make it sound like 'in-VAL-id' with an English 'a' sound. In Portuguese, the 'á' is an open, clear vowel sounds like the 'a' in 'father.'

Gender Mismatch

Incorrect: 'Esta resposta é inválido.' Correct: 'Esta resposta é inválida.'

Confusion with 'Nulo'

While often interchangeable, 'nulo' specifically means 'null' or 'void from the start,' whereas inválido is a broader term for anything that lacks validity.

A third mistake is using inválido to describe a person's health in a way that sounds derogatory or outdated. As mentioned, while inválido historically meant 'disabled,' using it today to describe a person can be seen as insensitive. If you mean to say someone is sick, use 'doente.' If you mean they have a disability, use 'pessoa com deficiência.' Using inválido for people is mostly reserved for technical insurance terms regarding 'invalidez permanente.' Additionally, learners sometimes confuse inválido with 'errado' (wrong). While an inválido password is 'errada,' the word inválido specifically implies it failed a validation check, whereas 'errado' is more general. You wouldn't say a math answer is inválido; you would say it is 'errado.'

Finally, there is the issue of pluralization. When referring to multiple items, learners often forget to add the 's'. 'Estes códigos são inválido' is incorrect. It must be 'Estes códigos são inválidos.' In Portuguese, the adjective must mirror the noun in both gender and number. This redundancy is a core feature of the language that requires constant attention. To avoid these mistakes, always pause before the adjective to identify the noun it is modifying. Is it masculine or feminine? Is it singular or plural? Is it about a person or an object? Asking these questions will help you choose the correct form and context for inválido, ensuring your Portuguese sounds natural and respectful.

Pronunciation Error

Saying 'in-va-LI-do' instead of 'in-VÁ-li-do'. The stress is on the 'VÁ'.

Context Error

Using 'inválido' for a person in a casual setting. Use 'doente' or 'ferido' instead.

While inválido is a very useful word, Portuguese offers several synonyms and related terms that can provide more precision depending on the context. The most common alternative is nulo. In many legal and bureaucratic situations, nulo and inválido are used interchangeably. However, 'nulo' carries a stronger sense of 'nothingness' or 'void.' If a marriage is declared 'nulo,' it is as if it never legally existed. Inválido is slightly more general, often referring to something that is simply not acceptable in its current state. Another close relative is ilegítimo. This word specifically refers to something that lacks legitimacy or is against the law, often used for claims to power or children born outside of legal recognitions (though this latter use is archaic).

Nulo vs Inválido

'Nulo' is often used for votes or contracts that are completely void. 'Inválido' is used for passwords, data, or documents that are incorrect or expired.

Caduco

This word is used for something that was once valid but has 'expired' or become 'obsolete,' like a law or a patent.

In digital contexts, you might also see incorreto (incorrect) or errado (wrong). These are softer and more common in casual settings. If you tell a friend their phone number is inválido, it sounds very formal, as if you are a computer. It is better to say 'O número está errado.' However, if you are filling out a form and the system rejects the number, it will say 'Número inválido.' Another important term is improcedente, which is used in legal settings to describe a claim or a lawsuit that a judge has dismissed because it lacks merit. While an 'argumento inválido' is logically flawed, an 'argumento improcedente' is legally rejected.

For things that are physically broken or not working, use estragado or quebrado. You would never say a car is inválido if it doesn't start; you would say it is 'estragado.' Inválido is reserved for the realm of rules, logic, and information. Finally, consider the word vão (vain/futile). While not a direct synonym for invalid, it describes an effort that was inválido in its outcome, such as 'uma tentativa vã.' Mastering these distinctions will help you sound more like a native speaker and allow you to navigate the complexities of Portuguese with greater precision. Whether you are in a courtroom, a software office, or a grocery store, choosing between inválido, nulo, or errado will show your command of the language's nuances.

Formal Synonym

Írrito (very formal, used in high-level legal texts to mean null or void).

Informal Alternative

Não vale (It's not worth anything / It doesn't count).