At this beginning level, 'efterforske' is a very advanced word. You probably won't use it yourself, but you might see it in a simple news headline. Think of it as a very serious version of 'to look.' At A1, you focus on 'at se' (to see) or 'at lede efter' (to look for). If you want to say 'The police look for the man,' you say 'Politiet leder efter manden.' 'Efterforske' is for when they are doing a big, difficult job to find out a secret. It is a long word, so just remember that 'efter' means 'after' and 'forske' is like 'research.' You are 'researching after' the truth. Don't worry about using it in your own sentences yet; just recognize it when you see a police car!
At the A2 level, you are starting to understand more about jobs and the world around you. You might learn that 'en detektiv efterforsker' (a detective investigates). You can use it in very simple sentences like 'Politiet efterforsker sagen' (The police investigate the case). Remember that it is a regular verb. In the past, you add '-ede': 'De efterforskede.' It is important to know that you cannot 'efterforske' your keys or your phone if you lose them. For that, you use 'leder efter.' You only 'efterforske' something important, like a mystery or a crime. If you watch a Danish crime show with subtitles, you will start to hear this word often.
At B1, you should be able to use 'efterforske' to describe events in the news or plots in books. You understand that it is a formal word. You can now use it with 'fordi' (because) to explain why something is happening: 'Politiet efterforsker ham, fordi han har stjålet penge.' You also start to see the noun form 'en efterforskning' (an investigation). You should be careful not to confuse it with 'forske' (to do science). If you are talking about a university, use 'forske.' If you are talking about a crime or a secret, use 'efterforske.' This is the level where you start to notice the difference between 'undersøge' (general) and 'efterforske' (specific/official).
At the B2 level, you are expected to use 'efterforske' correctly and fluently. You should understand the nuances of the word—that it implies a methodical, official process. You can use the passive voice: 'Sagen bliver efterforsket af eksperter' (The case is being investigated by experts). You should also be able to use it in professional contexts, such as 'Vi skal efterforske årsagen til fejlen' (We must investigate the cause of the error). You understand that it carries a certain weight and formality. You can distinguish it from 'granske' (to scrutinize) and 'udforske' (to explore). Your vocabulary is now rich enough to choose 'efterforske' when you want to sound precise and professional.
At C1, you use 'efterforske' with precision in complex sentence structures. You might use it in the 's-passive' form (efterforskes) in formal reports. You understand its metaphorical uses in journalism and politics, such as 'efterforske magtmisbrug' (investigating abuse of power). You are aware of the legal implications of the word in a Danish context, such as the rights of a person being 'efterforsket.' You can discuss the ethics of an 'efterforskning' and use related academic terms. You rarely make mistakes with prepositions and can use the word to build sophisticated arguments about justice, transparency, and research methodology. You recognize the stylistic difference between 'efterforske' and its synonyms in literature.
At the C2 level, you have a native-like grasp of 'efterforske.' You understand its historical development and can use it in high-level legal, academic, or literary discourse. You can appreciate the subtle difference between 'en tilbundsgående efterforskning' (a thorough investigation) and 'en overfladisk undersøgelse.' You can use the word in abstract contexts, such as 'efterforske den menneskelige psyke' in a psychological treatise. You are familiar with technical legal terms like 'efterforskningsskridt' (investigative steps). You can manipulate the word's position in a sentence for emphasis and use it to convey subtle shades of meaning, irony, or authority. You are fully aware of how the word functions within the broader landscape of the Danish language and society.

efterforske en 30 segundos

  • Efterforske is a Danish verb meaning 'to investigate,' primarily used for crimes, legal cases, or formal inquiries requiring a systematic search for facts.
  • It is a regular Group 1 verb conjugated as efterforsker, efterforskede, efterforsket, and is frequently seen in its passive form, efterforskes.
  • Unlike 'forske' (scientific research), 'efterforske' focuses on specific events or suspicions, often involving the police, journalists, or official auditors.
  • Commonly used with the preposition 'for' when investigating someone for a crime, e.g., 'efterforske ham for bedrageri' (investigate him for fraud).

The Danish verb efterforske is a cornerstone of the Danish legal, journalistic, and academic lexicon. At its most fundamental level, it translates to 'to investigate,' 'to look into,' or 'to probe.' However, its usage is deeply rooted in the process of discovery following an event or the suspicion of an underlying truth. Unlike the broader term 'undersøge' (to examine/investigate), efterforske implies a systematic, often official, search for facts, evidence, or information regarding a specific incident, typically a crime or a complex social phenomenon. When you hear this word in Denmark, it is most frequently associated with the police force (politiet) or investigative journalists (undersøgende journalister).

Legal Context
In the Danish judicial system, the 'efterforskning' is the phase where the police gather evidence to determine if a crime has been committed and by whom. It is a formal process governed by the Administration of Justice Act (Retsplejeloven).

The word is a compound of 'efter' (after) and 'forske' (to research or search). This suggests a literal meaning of 'searching after' the facts. It is used when the outcome is unknown and requires a methodical approach. For example, if a bank experiences a cyberattack, experts will efterforske the breach to find the source. It isn't just a casual look; it is a deep dive. In everyday conversation, you might use it slightly more figuratively, such as 'jeg må lige efterforske, hvor de penge blev af' (I need to investigate where that money went), though this often retains a semi-serious or humorous tone because the word carries significant weight.

Politiet valgte at efterforske sagen som et muligt drab, selvom der ikke var fundet et lig endnu.

Furthermore, the word distinguishes itself from 'forske' (to do scientific research). While a biologist might 'forske' in cancer cells to find a cure (a general pursuit of knowledge), a detective 'efterforsker' a specific burglary. One is proactive and academic; the other is reactive and forensic. This distinction is vital for B2 learners to master. Using 'forske' when you mean 'investigate a crime' would sound as if the police were writing a PhD thesis on the robbery rather than trying to catch the thief.

Journalistic Usage
Journalists use 'efterforske' when they are uncovering corruption or hidden scandals. It implies a 'watchdog' role where they are digging for truths that someone wants to keep hidden.

In a broader societal sense, efterforske is linked to the Danish value of transparency and justice. The expectation that authorities will thoroughly 'efterforske' complaints is a pillar of the high level of trust (tillid) in Danish society. If a citizen feels that a case has not been properly 'efterforsket,' it often leads to significant public debate and media scrutiny. Therefore, the word is not just a verb; it represents a commitment to the truth-seeking process. Whether it is a historical mystery, a financial discrepancy, or a missing person, the act of 'efterforskning' is what bridges the gap between suspicion and certainty.

Historikere forsøger nu at efterforske de præcise omstændigheder bag kongens pludselige død i 1500-tallet.

Technical Nuance
In IT and cybersecurity, 'efterforske' is used for forensic analysis of data logs and system breaches.

To wrap up, use efterforske when the stakes are high, the process is methodical, and the goal is to uncover the truth about a specific event. It is the word of detectives, auditors, and seekers of justice.

Mastering the usage of efterforske involves understanding its grammatical behavior as a regular Group 1 verb and its typical syntactic patterns. In Danish, 'efterforske' follows the standard conjugation: efterforsker (present), efterforskede (past), and har efterforsket (present perfect). It is a transitive verb, meaning it almost always takes a direct object—the thing or person being investigated.

Standard Pattern
[Subject] + [efterforsker] + [Object]. Example: 'Politiet efterforsker tyveriet.' (The police are investigating the theft.)

One of the most common ways to use the word is in the passive voice, especially in news reporting. Since the focus is often on the case rather than the specific officers, you will frequently see: 'Sagen bliver efterforsket' (The case is being investigated) or 'Sagen efterforskes' (The case is investigated). The '-s' ending for the passive is very common in formal Danish writing. For a B2 learner, being able to switch between 'de efterforsker' and 'det efterforskes' demonstrates a high level of proficiency.

Det er vigtigt at efterforske alle spor, før man drager en konklusion.

Prepositions also play a role. While you 'efterforsker' a case directly, you might 'efterforske nogen for noget' (investigate someone for something). For example: 'De efterforsker ham for skattesvig' (They are investigating him for tax fraud). Notice how 'for' links the person to the suspected crime. Another common structure involves using adverbs to describe the intensity or scope of the investigation, such as 'grundigt' (thoroughly) or 'intensivt' (intensively).

In more complex sentences, you might see it used with subordinate clauses. For instance: 'Politiet efterforsker, om der er en sammenhæng mellem de to indbrud' (The police are investigating whether there is a connection between the two burglaries). Here, the object is the entire clause starting with 'om' (whether/if). This is a very common way to express the uncertainty inherent in an investigation. You are not just investigating a 'thing,' but investigating a 'possibility.'

The Noun Form
Don't forget the noun 'efterforskning' (investigation). You will often see 'iværksætte en efterforskning' (initiate an investigation).

Finally, consider the word order in questions. Because Danish uses V2 word order in main clauses but changes for questions, you would say: 'Hvorfor efterforskede de ikke sagen?' (Why didn't they investigate the case?). If you are writing a formal report, you might use the perfect participle as an adjective: 'Den efterforskede hændelse fandt sted i maj' (The investigated incident took place in May), though this is slightly more clinical and less common than using a relative clause.

Vi er nødt til at efterforske, hvem der har adgang til de fortrolige filer.

By practicing these patterns—transitive use, passive voice, and 'for' constructions—you will be able to use efterforske naturally in both spoken and written Danish. It is a verb that demands precision, just like the act it describes.

If you live in Denmark or consume Danish media, efterforske will become a very familiar sound. It is ubiquitous in the 'Krimi' (crime) genre, which is a massive part of Danish culture. From the gritty streets of Copenhagen in 'Broen' (The Bridge) to the procedural intensity of 'Rejseholdet' (Unit One), the word is the engine of the plot. Characters are constantly discussing what they need to efterforske next. In these shows, you'll hear it used by police commissioners, forensic scientists, and defense attorneys.

The Evening News (TV2 News / DR1)
Every evening, news anchors use this word when reporting on local crimes, international scandals, or political inquiries. 'Politiet efterforsker i øjeblikket et skyderi på Nørrebro' is a typical headline.

Beyond fiction and news, you will hear efterforske in professional environments, particularly in law, finance, and insurance. If you work for a large Danish company like Novo Nordisk or Maersk, the 'compliance' department might efterforske internal irregularities. In these settings, the word sounds serious and professional. It indicates that a formal protocol is being followed. It is not just 'looking into a problem'; it is a documented 'efterforskning' that could have legal consequences.

'Vi kan ikke udtale os, så længe politiet stadig efterforsker sagen,' sagde talsmanden.

In the podcast world, 'True Crime' is incredibly popular in Denmark. Podcasts like 'Mørkeland' or 'Danske Drabssager' use the word repeatedly as they walk listeners through historical cases. Here, you hear the word in a more narrative, storytelling context. The hosts might discuss how the police efterforskede a lead for months without success. This gives you a sense of the word's temporal nature—it's a process that takes time.

You might also encounter the word in academic settings, though less frequently than 'forske.' A sociologist might efterforske the causes of a specific social riot. While 'forske' is for the general study of sociology, 'efterforske' is for the specific investigation into that one riot. Finally, in the digital age, you'll see it on websites related to consumer rights. If a company is suspected of misleading customers, the Forbrugerombudsmanden (Consumer Ombudsman) will efterforske the matter. In short, anywhere there is a mystery to be solved or a rule that might have been broken, efterforske is the word of choice.

Public Discourse
In debates about government transparency, politicians often call for an independent commission to 'efterforske' ministerial conduct.

Journalisterne brugte måneder på at efterforske pengestrømmene i skattely.

By paying attention to these different contexts, you'll start to feel the 'weight' of the word. It's a word that demands attention and signals that something important is being uncovered.

For English speakers, the most common pitfall when using efterforske is confusing it with its close relatives: forske, undersøge, and lede efter. While they all involve searching or looking into something, they are not interchangeable in Danish, and using the wrong one can significantly change your meaning or make you sound unnatural.

Mistake 1: efterforske vs. forsker
English uses 'research' and 'investigate' somewhat fluidly. In Danish, 'forske' is strictly for scientific or academic research. If you say 'Jeg efterforsker kræft' (I am investigating cancer), it sounds like you are looking for a specific criminal act involving cancer. You should say 'Jeg forsker i kræft' (I am doing research on cancer).

Another frequent error is using 'efterforske' for simple, everyday tasks. If you are looking for your car keys, you do not 'efterforske' them. You 'leder efter' (look for) them. 'Efterforske' is too heavy for misplaced objects. Similarly, if you are checking a website for information, you 'undersøger' the website. 'Efterforske' implies a level of depth and often a suspicion of wrongdoing that 'undersøge' does not necessarily have.

Forkert: Jeg skal efterforske hvornår bussen kører.
Rigtigt: Jeg skal undersøge hvornår bussen kører.

Prepositional errors are also common. English speakers often want to say 'investigate about' something. In Danish, you don't 'efterforske om' a crime in the sense of 'about'; you 'efterforsker' the crime directly (direct object). However, you can 'efterforske, om noget er sandt' (investigate whether something is true). Using 'om' as 'about' is a classic 'Danglish' mistake. Stick to the direct object unless you are introducing a subordinate clause.

Learners also sometimes confuse 'efterforske' with 'opklare' (to solve/clarify). 'Efterforske' is the process; 'opklare' is the result. You can 'efterforske' a case for years without ever 'opklare' (solving) it. If you say 'Politiet opklarede sagen i tre måneder,' it sounds like they solved it repeatedly for three months. You should say 'Politiet efterforskede sagen i tre måneder og opklarede den til sidst.'

Word Order in Subordinate Clauses
Remember the 'central adverb' rule. 'Jeg ved, at politiet ikke (not) efterforsker sagen.' The 'ikke' comes before the verb in a 'at'-clause.

Finally, avoid overusing the word. In English, we might 'investigate' a new restaurant. In Danish, you would 'prøve' or 'tjekke' it. Using 'efterforske' there would make it sound like you're a food inspector looking for health code violations. Keep 'efterforske' for the serious stuff!

To truly master Danish, you need to know when to use efterforske and when a synonym might be more appropriate. Danish has several words for 'looking into' something, each with its own nuance and register.

Undersøge vs. Efterforske
'Undersøge' is the most versatile. You can undersøge a patient (examine), undersøge a claim (verify), or undersøge a market (analyze). 'Efterforske' is a subset of 'undersøge' specifically for uncovering hidden facts or crimes. If in doubt, 'undersøge' is safer, but 'efterforske' is more precise for detective work.

Granske is another powerful alternative. It means 'to scrutinize' or 'to examine minutely.' While 'efterforske' is about finding out what happened, 'granske' is about looking extremely closely at what you already have—like 'granske et regnskab' (scrutinize an account) to find a tiny error. It implies a very high level of detail, often involving documents or texts.

Revisoren valgte at granske hvert eneste bilag for at finde fejlen.

Udforske is often confused with 'efterforske' due to the similar sound. However, 'udforske' means 'to explore.' You 'udforsker' a cave, a new city, or a scientific theory. It has a sense of adventure or open-ended discovery, whereas 'efterforske' is targeted and forensic. You wouldn't 'efterforske' Mars unless you thought a crime had been committed there; you 'udforsker' Mars to see what's there.

For more informal situations, you might use tjekke op på (check up on) or kigge på (look at). If a friend tells you a weird fact, you might say 'Det må jeg lige tjekke op på' (I need to check up on that). Using 'efterforske' here would be overly dramatic. In a professional context, analysere (analyze) is used when dealing with data or trends. You 'analyserer' the results of an 'efterforskning.'

Opklare
Meaning 'to solve' or 'to clear up.' This is the goal of an investigation. 'Politiet håber at opklare mordet.' (The police hope to solve the murder.)

Finally, gennemse means 'to review' or 'to look through.' If you are looking through security footage, you 'gennemser overvågningsbillederne' as part of your 'efterforskning.' Understanding these distinctions allows you to choose the word that perfectly matches the intensity and goal of your search.

Vi skal gennemse alle dokumenterne, før vi kan konkludere noget.

Ejemplos por nivel

1

Politiet efterforsker sagen.

The police are investigating the case.

Present tense of 'efterforske'.

2

De vil efterforske tyveriet.

They will investigate the theft.

Future with 'vil' + infinitive.

3

Hvem efterforsker det?

Who is investigating it?

Question word 'hvem' as subject.

4

Han efterforsker et mysterium.

He is investigating a mystery.

Subject-Verb-Object (SVO) order.

5

Vi skal efterforske nu.

We must investigate now.

Modal verb 'skal' + infinitive.

6

Hun efterforskede i går.

She investigated yesterday.

Past tense ending in -ede.

7

De efterforsker ikke her.

They are not investigating here.

Negation with 'ikke'.

8

Kan du efterforske det?

Can you investigate it?

Modal verb 'kan' for ability/request.

1

Detektiven efterforsker et mord.

The detective is investigating a murder.

Common noun 'detektiv' as subject.

2

Hvorfor efterforskede de ham?

Why did they investigate him?

Past tense in a question.

3

De har efterforsket i mange dage.

They have investigated for many days.

Present perfect tense.

4

Politiet begynder at efterforske.

The police are starting to investigate.

Infinitive with 'at'.

5

Vi efterforsker, hvad der skete.

We are investigating what happened.

Subordinate clause with 'hvad'.

6

Hun vil gerne efterforske sandheden.

She would like to investigate the truth.

Phrase 'vil gerne' + infinitive.

7

De efterforskede sagen grundigt.

They investigated the case thoroughly.

Adverb 'grundigt' modifying the verb.

8

Er sagen blevet efterforsket?

Has the case been investigated?

Passive voice in present perfect.

1

Journalisten efterforsker korruption i regeringen.

The journalist is investigating corruption in the government.

Specific professional context.

2

Det er svært at efterforske it-kriminalitet.

It is difficult to investigate IT crime.

Dummy subject 'det' + adjective.

3

De efterforsker ham for at have løjet.

They are investigating him for having lied.

Preposition 'for' + infinitive phrase.

4

Hvis de efterforsker mere, finder de svaret.

If they investigate more, they will find the answer.

Conditional 'hvis' clause.

5

Sagen skal efterforskes af en uafhængig part.

The case must be investigated by an independent party.

Passive voice with modal 'skal'.

6

Han nægtede at lade dem efterforske hans hus.

He refused to let them investigate his house.

Verb 'nægte' + 'at' + 'lade'.

7

Hvor længe har de efterforsket denne sag?

How long have they been investigating this case?

Present perfect for ongoing action.

8

Vi må efterforske alle muligheder.

We must investigate all possibilities.

Modal verb 'må' (must).

1

Politiet valgte at efterforske hændelsen som en hadforbrydelse.

The police chose to investigate the incident as a hate crime.

Verb 'valgte' + 'at' + 'efterforske'.

2

Der er ikke nok beviser til at efterforske ham yderligere.

There is not enough evidence to investigate him further.

Adverb 'yderligere' (further).

3

Skattevæsenet efterforsker nu virksomhedens regnskaber.

The tax authorities are now investigating the company's accounts.

Possessive 'virksomhedens'.

4

Det er afgørende at efterforske kilden til lækagen.

It is crucial to investigate the source of the leak.

Adjective 'afgørende' (crucial).

5

De efterforskede sagen i månedsvis uden resultat.

They investigated the case for months without result.

Adverb 'i månedsvis' (for months).

6

Man kan ikke efterforske noget, der ikke er anmeldt.

One cannot investigate something that has not been reported.

Relative clause starting with 'der'.

7

Hvorfor blev sagen ikke efterforsket dengang?

Why wasn't the case investigated back then?

Passive voice in a past tense question.

8

Vi er i gang med at efterforske klagen.

We are in the process of investigating the complaint.

Phrase 'i gang med at' (in the process of).

1

Kommissionen skal efterforske de systemiske svigt i ældreplejen.

The commission is to investigate the systemic failures in elderly care.

Formal academic/political vocabulary.

2

Det kræver særlige kompetencer at efterforske økonomisk kriminalitet.

It requires special skills to investigate economic crime.

Infinitive phrase as logical subject.

3

Myndighederne har pligt til at efterforske enhver mistanke om overgreb.

The authorities have a duty to investigate any suspicion of abuse.

Noun 'pligt' followed by 'til at'.

4

Man bør efterforske, hvorvidt de nye regler har haft den ønskede effekt.

One should investigate whether the new rules have had the desired effect.

Conjunction 'hvorvidt' (whether).

5

Sagen efterforskes som et terrorforsøg.

The case is being investigated as an attempted act of terrorism.

The 's-passive' form (efterforskes).

6

Det er vigtigt at efterforske de underliggende årsager til radikalisering.

It is important to investigate the underlying causes of radicalization.

Compound adjective 'underliggende'.

7

Journalisterne formåede at efterforske sagen trods massiv modstand.

The journalists managed to investigate the case despite massive opposition.

Verb 'formå' (to manage/be able).

8

Efter at have efterforsket sagen i et år, lukkede de den.

After having investigated the case for a year, they closed it.

Perfect participle construction.

1

Anklagemyndigheden overvejer nu, om der er grundlag for at efterforske ministeren.

The prosecution is now considering whether there is a basis for investigating the minister.

Complex administrative language.

2

Det er en udfordring at efterforske forbrydelser begået i det mørke net.

It is a challenge to investigate crimes committed on the dark web.

Past participle 'begået' used as an adjective.

3

Sagen blev henlagt, da man ikke længere kunne efterforske den effektivt.

The case was dropped as it could no longer be investigated effectively.

Conjunction 'da' (as/since) and passive voice.

4

Forskerne ønsker at efterforske de langsigtede konsekvenser af klimaforandringer.

The researchers wish to investigate the long-term consequences of climate change.

Note: Here 'efterforske' is used for a specific inquiry into consequences.

5

Politiets ressourcer til at efterforske personfarlig kriminalitet er begrænsede.

The police's resources to investigate violent crime are limited.

Genitive 'Politiets' and compound 'personfarlig'.

6

Man må efterforske, i hvilket omfang algoritmer påvirker vores valg.

One must investigate to what extent algorithms influence our choices.

Phrase 'i hvilket omfang' (to what extent).

7

Der blev nedsat en kommission til at efterforske de historiske uretfærdigheder.

A commission was established to investigate the historical injustices.

Passive voice 'blev nedsat'.

8

Det er nødvendigt at efterforske, hvordan fejlen kunne opstå i systemet.

It is necessary to investigate how the error could arise in the system.

Interrogative adverb 'hvordan'.

Sinónimos

undersøge granske opklare udforske gennemsøge analysere efterse inkvirere

Antónimos

ignorere overse skrinlægge skjule

Colocaciones comunes

efterforske en sag
efterforske et mord
efterforske grundigt
efterforske for bedrageri
efterforske muligheden for
efterforske et tip
efterforske en klage
efterforske årsagen til
efterforske intensivt
efterforske spor

Frases Comunes

Sagen efterforskes stadig.

— The investigation is ongoing and no conclusion has been reached yet.

Politiet kan ikke sige mere, da sagen efterforskes stadig.

At efterforske til bunds.

— To investigate something completely and thoroughly down to the last detail.

Vi lover at efterforske denne skandale til bunds.

Efterforsket for...

— The standard way to say someone is being investigated for a specific crime.

Han er efterforsket for skatteunddragelse.

Iværksætte en efterforskning.

— To officially start or initiate an investigation.

Regeringen har valgt at iværksætte en efterforskning.

Indstille efterforskningen.

— To stop or suspend the investigation.

På grund af manglende beviser valgte de at indstille efterforskningen.

Efterforske på egen hånd.

— To investigate something by oneself without official help.

Detektiven valgte at efterforske på egen hånd.

Hjælpe med at efterforske.

— To assist authorities or others in an investigation.

Vidnerne hjalp med at efterforske hændelsen.

Nægte at efterforske.

— To refuse to look into a matter.

Politiet nægtede at efterforske den lille sag.

Efterforske i fortiden.

— To look into events tha

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