diagnosticar
diagnosticar in 30 Seconds
- A verb meaning 'to diagnose', used for identifying medical conditions, technical faults, or abstract problems.
- Commonly used in medical, technical, and professional contexts to describe a systematic identification process.
- Follows regular -ar verb conjugation patterns and is usually a transitive direct verb in Portuguese.
- Key phrases include 'diagnosticar precocemente' (early diagnosis) and 'diagnosticar uma falha' (diagnose a fault).
The Portuguese verb diagnosticar is a sophisticated yet essential term used to describe the process of identifying a condition, problem, or disease through careful examination and analysis of signs or symptoms. While its roots are deeply embedded in the medical field, its usage has expanded significantly in modern Portuguese to encompass technical troubleshooting, organizational analysis, and even social commentary. When you use this word, you are implying a level of expertise or a systematic approach to finding the root cause of something. It is not merely 'guessing' or 'seeing'; it is the act of concluding based on evidence.
- Medical Context
- In a clinical setting, it refers to a professional determining which disease or condition explains a person's symptoms. It is the bridge between observation and treatment.
O médico conseguiu diagnosticar a gripe rapidamente após ver os exames de sangue do paciente na semana passada.
- Technical Application
- Used by mechanics, IT specialists, and engineers to find faults in complex systems. It implies a diagnostic protocol or a series of tests performed on hardware or software.
Beyond the physical and the digital, diagnosticar is frequently heard in corporate environments. A consultant might be hired to 'diagnosticar' the reasons for a company's declining profits. In this sense, the word carries a metaphorical weight, suggesting that the organization is a 'body' with 'ailments' that need 'treatment'. This versatility makes it an indispensable tool for learners moving from basic communication to professional or academic levels of Portuguese. It allows you to move beyond simple verbs like 'ver' (to see) or 'encontrar' (to find) into a realm of precision and analytical depth.
É necessário diagnosticar as falhas estruturais do projeto antes de continuarmos com o investimento financeiro.
- Social and Psychological Use
- Often used when discussing societal issues, such as diagnosing the causes of inequality or diagnosing a friend's emotional state, though the latter should be used carefully to avoid sounding overly clinical.
To master this word, one must understand that it is almost always followed by a direct object—the thing being diagnosed. Whether it is a 'doença' (illness), a 'problema' (problem), or an 'erro' (error), the focus is on the conclusion reached through study. It is a verb of discovery and determination. In everyday conversation, you might hear a friend say, 'O mecânico não conseguiu diagnosticar o barulho no motor,' highlighting the frustration of an inconclusive examination. This highlights that the verb is not just about the final answer, but the attempt to find it. In the context of self-improvement, one might 'diagnosticar' their own weaknesses to better themselves, showing that the word can also be reflexive in spirit, if not always in grammar.
Precisamos diagnosticar o motivo pelo qual as vendas caíram tanto este mês.
Eles conseguiram diagnosticar a avaria elétrica no sistema de navegação do avião.
Using diagnosticar correctly requires understanding its transitive nature. In most cases, it functions as a transitive direct verb, meaning it connects directly to the object without a preposition. You 'diagnosticar' something. However, the syntax can vary slightly depending on whether you are talking about the person being diagnosed or the condition itself. For example, you can say 'O médico diagnosticou o paciente' (The doctor diagnosed the patient) or 'O médico diagnosticou a pneumonia' (The doctor diagnosed pneumonia). Both are common, but the second one specifies the result of the examination.
- Direct Object: The Illness
- This is the most frequent usage. The verb is followed by the name of the disease or technical fault. Example: 'O técnico diagnosticou um vírus no computador.'
O especialista vai diagnosticar a origem do vazamento na próxima semana.
- Direct Object: The Person
- When the object is a person, it often implies that the person underwent the diagnostic process. Often followed by 'com' (with) to specify the condition. Example: 'Ela foi diagnosticada com asma.'
In formal writing, diagnosticar is often paired with adverbs that describe the speed or accuracy of the process. Words like 'precocemente' (early/prematurely), 'corretamente' (correctly), and 'erroneamente' (erroneously) are vital for adding nuance. For instance, 'diagnosticar precocemente' is a very common phrase in health campaigns, emphasizing the importance of early detection for successful treatment. In a professional report, you might see 'diagnosticar com precisão', highlighting the quality of the analysis.
É fundamental diagnosticar precocemente certas doenças para aumentar as chances de cura total.
- Infinitive Constructions
- The verb is frequently used after modal verbs like 'poder' (can/may), 'dever' (should/must), and 'precisar' (need). Example: 'Nós precisamos diagnosticar o erro do sistema.'
When dealing with abstract nouns, the verb maintains its structure. You can 'diagnosticar a situação' (diagnose the situation) or 'diagnosticar o clima organizacional' (diagnose the organizational climate). In these cases, it functions as a synonym for 'analisar profundamente' (to analyze deeply). It suggests that the speaker is looking for underlying causes rather than just observing surface-level effects. This makes it a powerful verb in debate and critical thinking, as it moves the conversation from symptoms to causes.
O consultor tentou diagnosticar a crise econômica que afetava o setor têxtil no país.
Não é fácil diagnosticar problemas de software que ocorrem de forma intermitente.
If you spend any significant time in a Portuguese-speaking country, you will encounter diagnosticar in several distinct environments. The most obvious is the 'hospital' or 'posto de saúde'. You will hear doctors discussing 'exames para diagnosticar' (exams to diagnose) or patients asking 'O que o senhor diagnosticou?' (What did you diagnose?). It is a word that carries authority and often brings a sense of relief or concern to the listener, as it represents the end of uncertainty regarding a health issue.
- The Media and News
- News anchors frequently use the word when reporting on public health crises, economic downturns, or environmental issues. 'Os especialistas diagnosticam uma crise hídrica' (Experts diagnose a water crisis).
No telejornal, o economista disse que é difícil diagnosticar as causas da inflação atual.
- Workshops and Technical Support
- When your car breaks down or your computer won't start, the professional will say: 'Preciso de um tempo para diagnosticar o problema'. It implies a diagnostic fee in many cases.
In academic and intellectual circles, diagnosticar is a favorite for sociologists and political scientists. They 'diagnose' the ills of society, such as 'diagnosticar a corrupção' or 'diagnosticar a falta de educação básica'. Here, the word takes on a critical, transformative role. It is not just about identifying, but about providing a basis for reform. In university lectures, you will hear professors asking students to 'diagnosticar as variáveis' of a specific experiment or case study, reinforcing the word's connection to the scientific method.
O sociólogo escreveu um livro para diagnosticar as raízes da violência urbana nas grandes metrópoles.
- Personal Relationships
- While less common, you might hear it in a semi-joking or serious conversation between friends: 'Você está tentando diagnosticar minha vida?' (Are you trying to diagnose my life?).
Finally, in the world of sports, commentators use it to describe a team's performance. If a team is losing consistently, a commentator might say, 'O técnico ainda não conseguiu diagnosticar por que a defesa está tão lenta'. This usage bridges the gap between technical analysis and everyday observation, making the word feel accessible even outside of a laboratory or clinic. Whether in a high-stakes medical emergency or a routine car check-up, diagnosticar is the go-to word for finding out what's really going on beneath the surface.
O treinador precisa diagnosticar a falta de motivação dos jogadores antes da final do campeonato.
Muitos psicólogos trabalham para diagnosticar transtornos de aprendizagem em crianças em idade escolar.
One of the most frequent errors English speakers make when using diagnosticar is confusing it with the English word 'prognosticate' or its Portuguese cognate 'prognosticar'. While they sound similar, they are opposites in terms of timing. To diagnosticar is to identify a current or past state based on signs. To 'prognosticar' is to predict the future course of a disease or situation. If you tell a doctor you want him to 'diagnosticar' how long you have to live, you are using the wrong word; you want a 'prognóstico'.
- Confusing with 'Identificar'
- While they are synonyms, 'identificar' is much broader. You identify a person, a color, or a song. You only 'diagnosticar' when there is a complex problem or a disease involved. Using 'diagnosticar' for simple objects sounds unnaturally clinical.
Errado: O policial conseguiu diagnosticar o ladrão na multidão. (Use 'identificar' instead).
- Preposition Errors
- Learners often try to add 'de' or 'por' after the verb when it's not needed. Remember: 'diagnosticar algo' (no preposition). However, when using the passive voice, use 'com': 'Ele foi diagnosticado COM diabetes'.
Another subtle mistake is the incorrect use of the reflexive form. In English, we might say 'I diagnosed myself', but in Portuguese, using 'Eu me diagnostiquei' is often seen as grammatically correct but medically impossible or frowned upon. It is better to say 'Eu fiz um autodiagnóstico' or 'Eu identifiquei os sintomas em mim mesmo'. Using the verb reflexively can sometimes imply a lack of professional rigor, which might not be the tone you want to convey in a serious discussion.
Correto: O médico vai diagnosticar o problema amanhã, não tente fazer isso sozinho em casa.
- Misusing the Participle
- The participle 'diagnosticado' is often used as an adjective. Don't forget to change it for feminine subjects: 'Ela está diagnosticada' (She is diagnosed). Using the masculine 'diagnosticado' for a woman is a common gender agreement error.
Finally, be careful with the stress of the word. It is a 'paroxítona' (stressed on the second to last syllable: diag-nos-ti-CAR). If you stress the wrong syllable, it might sound like a different word or simply be unintelligible. Many learners struggle with long verbs ending in '-icar'. Practice saying it slowly: di-ag-nos-ti-car. The 'car' at the end should be clear and strong, as it is the infinitive marker. Avoiding these common pitfalls will make your Portuguese sound much more natural and precise.
Cuidado: Não confunda diagnosticar com 'disgnosticar'; a letra 'a' após o 'i' é essencial para a grafia correta.
É um erro comum diagnosticar uma situação sem ter todos os dados necessários em mãos.
While diagnosticar is the most precise term for identifying conditions, several other words can be used depending on the context and the level of formality you wish to achieve. Understanding these nuances will help you sound more like a native speaker and avoid repetitive language in your writing or speech.
- Identificar (To Identify)
- The most common alternative. It is neutral and can be used for almost anything. 'Identificar o problema' is very similar to 'diagnosticar o problema', but slightly less technical.
Conseguimos identificar a falha no sistema, mas ainda não sabemos como consertá-la.
- Detetar (To Detect)
- Often used when something is discovered using tools or senses. You detect a signal, a smell, or a hidden error. It implies the initial discovery rather than the full analysis that 'diagnosticar' suggests.
In more formal or literary contexts, you might encounter discernir (to discern). This verb implies a higher level of intellectual or spiritual perception. You discern the truth or discern the differences between two complex theories. It is rarely used for medical illnesses but frequently used for diagnosing 'abstract' problems or moral dilemmas. Another alternative is determinar (to determine), which focuses on the finality of the decision. Once a doctor diagnoses, they have determined the cause.
- Analisar (To Analyze)
- This describes the process leading up to the diagnosis. If you are still looking at the data, you are 'analisando'. Once you have the answer, you 'diagnosticou'.
Após analisar os dados por horas, o cientista pôde finalmente diagnosticar a anomalia.
For informal situations, Brazilians might use the expression sacar (to get/to realize). 'Eu saquei o que estava errado' (I got what was wrong). While not a synonym for 'diagnosticar' in a professional sense, it covers the 'aha!' moment of identification in casual speech. In technical manuals, you will often see the word localizar (to locate) used for faults: 'Localizar e diagnosticar a avaria'. This pair is common because locating where the problem is is the first step to diagnosing what it is.
O perito conseguiu determinar a causa do incêndio após uma longa investigação.
É preciso discernir entre um simples erro humano e uma falha sistêmica grave.
Examples by Level
O médico vai diagnosticar a doença.
The doctor will diagnose the disease.
Future tense with 'vai' + infinitive.
Eu preciso diagnosticar o erro.
I need to diagnose the error.
Infinitive after 'preciso'.
Ela quer diagnosticar o problema.
She wants to diagnose the problem.
Infinitive after 'quer'.
Eles ajudam a diagnosticar pacientes.
They help to diagnose patients.
Present tense, 3rd person plural.
Como diagnosticar uma gripe?
How to diagnose a flu?
Interrogative sentence with infinitive.
O teste serve para diagnosticar.
The test serves to diagnose.
Purpose clause with 'para'.
Você pode diagnosticar isso?
Can you diagnose this?
Interrogative with 'pode'.
É difícil diagnosticar agora.
It is difficult to diagnose now.
Impersonal 'É' + adjective + infinitive.
O doutor diagnosticou o meu resfriado ontem.
The doctor diagnosed my cold yesterday.
Pretérito Perfeito (Past tense).
Nós diagnosticamos a falha no carro.
We diagnosed the fault in the car.
1st person plural, past tense.
Ela foi diagnosticada com uma alergia forte.
She was diagnosed with a strong allergy.
Passive voice with 'foi' + participle.
É importante diagnosticar o problema cedo.
It is important to diagnose the problem early.
Adverb 'cedo' modifying the action.
O técnico diagnosticou um vírus no laptop.
The technician diagnosed a virus on the laptop.
Technical context usage.
Eles não conseguiram diagnosticar a causa.
They couldn't diagnose the cause.
Negative past tense with 'conseguiram'.
Você já diagnosticou o que está errado?
Have you already diagnosed what is wrong?
Present perfect sense with 'já'.
O exame ajuda o médico a diagnosticar.
The exam helps the doctor to diagnose.
Verb 'ajudar' followed by 'a' + infinitive.
Se o médico diagnosticar a doença hoje, começamos o tratamento.
If the doctor diagnoses the disease today, we start the treatment.
Future Subjunctive after 'se'.
O mecânico está tentando diagnosticar o barulho estranho.
The mechanic is trying to diagnose the strange noise.
Present continuous with 'está tentando'.
Eu gostaria que você diagnosticasse este erro de código.
I would like you to diagnose this code error.
Imperfect Subjunctive after 'gostaria que'.
Eles diagnosticaram a crise antes de todos.
They diagnosed the crisis before everyone.
Metaphorical use in business/economy.
A máquina parou, e ninguém consegue diagnosticar o porquê.
The machine stopped, and no one can diagnose why.
Use of 'o porquê' as a noun object.
O software foi criado para diagnosticar falhas automaticamente.
The software was created to diagnose faults automatically.
Passive voice + adverb 'automaticamente'.
Muitas vezes, é difícil diagnosticar problemas emocionais.
Often, it is difficult to diagnose emotional problems.
Psychological context.
O perito vai diagnosticar a origem do incêndio amanhã.
The expert will diagnose the origin of the fire tomorrow.
Future tense with 'vai'.
Ao diagnosticar a situação, percebemos que faltavam recursos.
Upon diagnosing the situation, we realized resources were lacking.
Gerundial use of the infinitive with 'ao'.
O relatório diagnosticou uma queda na produtividade da empresa.
The report diagnosed a drop in the company's productivity.
Abstract subject 'O relatório'.
É vital que a equipe diagnostique os riscos do projeto.
It is vital that the team diagnoses the project risks.
Present Subjunctive after 'É vital que'.
O especialista diagnosticou corretamente a anomalia genética.
The specialist correctly diagnosed the genetic anomaly.
Use of adverb 'corretamente'.
Eles foram diagnosticados erroneamente no início do ano.
They were erroneously diagnosed at the beginning of the year.
Passive voice + adverb 'erroneamente'.
Diagnosticar o mercado exige muita pesquisa e análise de dados.
Diagnosing the market requires a lot of research and data analysis.
Infinitive as the subject of the sentence.
O psicólogo diagnosticou o paciente com transtorno de ansiedade.
The psychologist diagnosed the patient with anxiety disorder.
Standard medical/psychological structure.
Não podemos diagnosticar o problema sem as ferramentas adequadas.
We cannot diagnose the problem without the proper tools.
Modal verb 'podemos' + negation.
O autor busca diagnosticar os males da sociedade contemporânea.
The author seeks to diagnose the ills of contemporary society.
Literary/Philosophical context.
Tendo diagnosticado a falha, o engenheiro propôs uma solução imediata.
Having diagnosed the fault, the engineer proposed an immediate solution.
Compound gerund 'Tendo diagnosticado'.
A dificuldade em diagnosticar tais casos reside na sutileza dos sintomas.
The difficulty in diagnosing such cases lies in the subtlety of the symptoms.
Prepositional phrase 'em diagnosticar'.
O governo falhou ao diagnosticar a gravidade da inflação.
The government failed by diagnosing the severity of inflation incorrectly (implied).
Use of 'ao' + infinitive to indicate time/manner.
Diagnosticar-se a si mesmo pode ser um erro perigoso.
Diagnosing oneself can be a dangerous mistake.
Reflexive use with 'se a si mesmo' for emphasis.
O cientista logrou diagnosticar a nova variante do vírus em tempo recorde.
The scientist succeeded in diagnosing the new virus variant in record time.
Formal verb 'lograr' (to succeed).
Raramente se consegue diagnosticar a causa exata sem uma biópsia.
Rarely can one diagnose the exact cause without a biopsy.
Indeterminate subject with 'se'.
O consultor foi contratado para diagnosticar o clima organizacional.
The consultant was hired to diagnose the organizational climate.
Corporate jargon usage.
A obra de Foucault tenta diagnosticar o funcionamento do poder.
Foucault's work attempts to diagnose the functioning of power.
Highly academic/theoretical context.
Pudesse o médico diagnosticar a alma, muitos males seriam evitados.
Could the doctor diagnose the soul, many ills would be avoided.
Inverted conditional with 'Pudesse' (Subjunctive).
O diagnóstico tardio é, amiúde, o prenúncio de um desfecho trágico.
Late diagnosis is often the harbinger of a tragic outcome.
Use of formal adverb 'amiúde' (often).
Diagnosticar o 'zeitgeist' requer uma sensibilidade aguçada para o efêmero.
Diagnosing the 'zeitgeist' requires a sharp sensitivity to the ephemeral.
Use of loanword 'zeitgeist' and sophisticated vocabulary.
A despeito de todos os exames, a patologia permaneceu por diagnosticar.
Despite all the exams, the pathology remained to be diagnosed.
Passive sense with 'por' + infinitive.
O ensaísta diagnostica uma erosão nos valores democráticos fundamentais.
The essayist diagnoses an erosion in fundamental democratic values.
Metaphorical use in political essay writing.
Não se deve diagnosticar a pressa como mera falta de tempo.
One should not diagnose haste as a mere lack of time.
Philosophical observation on human behavior.
Ao diagnosticar a obsolescência do sistema, a empresa decidiu pela migração total.
Upon diagnosing the system's obsolescence, the company decided on a total migration.
Technical/Strategic decision context.
Common Collocations
Common Phrases
— To diagnose based only on visual inspection without tests.
Não se pode diagnosticar essa doença a olho nu.
— To diagnose from a distance, often used metaphorically for obvious problems.
Dá para diagnosticar a crise de longe.
— To diagnose as the events are happening.
O sistema monitora e diagnostica erros em tempo real.
— To state a problem that is already clear to everyone.
Ele só veio aqui para diagnosticar o óbvio.
— To find the ultimate origin of a problem.
Precisamos diagnosticar a causa raiz do atraso.
— To analyze current market trends and health.
O consultor diagnosticou o mercado antes de investir.
— To attempt to identify a problem over a call.
O suporte tentou diagnosticar o erro por telefone.
— To identify a problem without any doubt.
O relatório diagnosticou com clareza os pontos fracos.
Summary
Diagnosticar is a precise, formal verb for identifying the root cause of a problem. Example: 'O médico conseguiu diagnosticar a doença a tempo' (The doctor managed to diagnose the disease in time).
- A verb meaning 'to diagnose', used for identifying medical conditions, technical faults, or abstract problems.
- Commonly used in medical, technical, and professional contexts to describe a systematic identification process.
- Follows regular -ar verb conjugation patterns and is usually a transitive direct verb in Portuguese.
- Key phrases include 'diagnosticar precocemente' (early diagnosis) and 'diagnosticar uma falha' (diagnose a fault).
Related Content
This Word in Other Languages
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abaixar
A2To move (something) to a lower position.
abdómen
B1The part of the body between the chest and the pelvis; belly.
abdômen
A2The part of the body containing the digestive organs; the belly.
abortar
A2To terminate a pregnancy.
abstinência
A2The fact or practice of restraining oneself from indulging in something.
abstinente
A2Refraining from an indulgence or pleasure.
acalmar-se
A2To become quiet and less agitated.
acamado
A2Bedridden; confined to bed by illness or infirmity.
acaso
A2By chance; perhaps.
acidentar
A2To have an accident; to experience an unfortunate incident.