krank sein

The German verbal phrase krank sein is the fundamental way to express that an individual is currently suffering from an illness, disease, or general lack of health. While it translates directly to 'to be sick' or 'to be ill' in English, its usage in German culture carries specific weight, particularly regarding social and professional obligations. When a person says 'Ich bin krank,' they are not just describing a physical sensation; they are often signaling a change in their functional status—meaning they may not be able to attend work, school, or social gatherings. The phrase encompasses everything from a minor common cold (eine Erkältung) to more severe, chronic conditions. However, in daily conversation, it most frequently refers to acute illnesses that temporarily incapacitate a person.

The State of Being

Unlike 'krank werden' (to become sick), 'krank sein' describes the ongoing state. It is a stative expression used with the copula verb 'sein'.

In a broader philosophical or metaphorical sense, krank sein can also describe systems, societies, or ideas that are dysfunctional. For instance, one might hear 'Das System ist krank' (The system is sick/broken). However, for B1 learners, the primary focus remains on human health. It is important to distinguish between being 'sick' in the sense of nausea (mir ist schlecht) and being 'sick' as in having a systemic illness (ich bin krank). In German, if you say 'Ich bin krank,' people will assume you have a fever, a virus, or a infection, rather than just feeling like you might vomit.

Degrees of Illness

One can be 'leicht krank' (slightly ill) or 'schwer krank' (seriously ill). The adverb 'ernsthaft' is often used for life-threatening conditions.

Furthermore, the phrase is often used in the context of 'krankgeschrieben sein'. This is a passive-like construction meaning a doctor has officially certified that you are too ill to work. If a colleague asks where Thomas is, the answer might be: 'Er ist krank,' which is shorthand for 'He is at home recovering.' The social expectation when someone is 'krank' is that they are resting and not engaging in leisure activities that could hinder recovery. This cultural nuance is vital for English speakers who might use 'sick' more loosely to mean 'feeling a bit off'. In German, 'krank sein' usually implies a need for medical attention or at least significant rest.

Mental Health

While historically used for physical ailments, it is increasingly common and accepted to use 'psychisch krank sein' to refer to mental health struggles.

Using krank sein correctly requires an understanding of the verb 'sein' (to be) and how it conjugates across different subjects and tenses. Because 'krank' functions as a predicative adjective in this phrase, it remains undeclined regardless of the gender or number of the subject. This makes it grammatically simpler than many other German structures, but the complexity arises when combining it with modal verbs or placing it in subordinate clauses. For instance, 'Ich bin krank' (I am sick) follows the standard Subject-Verb-Adjective order. However, in a subordinate clause, the 'sein' moves to the end: 'Ich bleibe zu Hause, weil ich krank bin' (I am staying home because I am sick).

Present Tense Conjugation

Ich bin krank, du bist krank, er/sie/es ist krank, wir sind krank, ihr seid krank, sie/Sie sind krank.

When discussing the past, you can use the Präteritum (simple past) or the Perfekt (present perfect). In spoken German, the Präteritum of 'sein' is very common: 'Ich war krank' (I was sick). The Perfekt 'Ich bin krank gewesen' is also correct but often feels more formal or emphasizes the duration of the completed state. If you want to express that someone has been sick for a while and still is, German uses the present tense with a time expression: 'Ich bin seit einer Woche krank' (I have been sick for a week). This is a common pitfall for English speakers who want to use the perfect tense here.

Modal Verbs

Modal verbs add nuance. 'Er muss krank sein' (He must be sick - logical deduction) or 'Er darf nicht krank sein' (He shouldn't be sick - expectation).

Another important aspect is the use of 'krank' with the verb 'fehlen' (to be missing). While not using 'sein', it is the logical result: 'Er fehlt, weil er krank ist' (He is missing/absent because he is sick). In professional settings, you might use the noun form in a prepositional phrase: 'Er ist wegen Krankheit entschuldigt' (He is excused due to illness). When asking about someone's health, 'Bist du krank?' is direct. A softer way is 'Fühlst du dich nicht gut?' (Do you not feel well?). If you are confirming a suspicion, you might say: 'Du siehst krank aus' (You look sick).

Subordinate Clauses

In 'dass' or 'weil' clauses, 'sein' moves to the end. 'Ich hoffe, dass du nicht krank bist.'

The phrase krank sein is ubiquitous in German daily life, appearing in contexts ranging from the very formal to the deeply personal. One of the most common places you will hear it is in the workplace. Germany has a very structured system for illness. If a colleague is not at their desk, the most likely explanation provided by a supervisor will be: 'Herr Müller ist heute leider krank.' This is a standard, neutral statement. You will also hear it in schools when parents call to excuse their children: 'Mein Sohn kann heute nicht kommen, er ist krank.' In these environments, the phrase acts as a formal justification for absence.

At the Doctor's Office

The doctor might ask: 'Wie lange sind Sie schon krank?' (How long have you been sick?) or state 'Sie sind noch zu krank, um zu arbeiten.'

In social circles, the phrase is used to express empathy or to explain why someone is missing a party or a meeting. 'Schade, dass Anna krank ist, wir hatten uns auf sie gefreut.' You will also encounter it in news reports, especially during flu season (Grippewelle), where journalists might report on how many people are 'krank gemeldet' (reported sick). In literature and film, krank sein is often used to build tension or evoke sympathy for a character. It can also be used in a derogatory way in slang, though this is less common for B1 learners to use themselves: 'Du bist doch krank!' can mean 'You're crazy!' or 'That's sick/gross!' depending on the context.

Public Announcements

On public transport, you might hear that a train is cancelled because the driver is 'erkrankt' (a more formal version of krank sein).

In pharmacies (Apotheken), pharmacists will use the term when advising on medication: 'Wenn Sie so krank sind, sollten Sie dieses Mittel dreimal täglich nehmen.' You will also see it in advertisements for vitamins or health insurance, often framed as 'Nicht mehr krank sein' (To no longer be sick). Understanding the context is key; in Germany, being 'krank' is taken seriously, and people generally don't 'power through' an illness at work as much as in some other cultures, making the phrase a very common part of professional communication.

Family Life

Parents often discuss their children's health: 'Ist das Kind wieder krank?' (Is the child sick again?).

English speakers often make several predictable errors when using krank sein. The most frequent mistake is confusing 'krank sein' with 'übel sein' or 'schlecht sein'. In English, 'I am sick' can mean 'I have the flu' OR 'I feel like I'm going to throw up'. In German, 'Ich bin krank' only means the former. If you have nausea, you must say 'Mir ist schlecht' or 'Mir ist übel' (using the dative 'mir'). Saying 'Ich bin schlecht' actually means 'I am a bad person', which can lead to some very funny or awkward misunderstandings in a pharmacy or doctor's office!

The 'Mir ist...' Trap

Never say 'Ich bin schlecht' when you mean you feel nauseous. Use 'Mir ist schlecht'. 'Krank sein' is for systemic illness.

Another common error involves the tense used with 'seit' (since). English speakers often say 'Ich bin krank gewesen seit Montag' (I have been sick since Monday). While understandable, the correct German way is 'Ich bin seit Montag krank' (I am sick since Monday). In German, if the state is still ongoing, you use the present tense. Using the perfect tense implies you are now healthy. Additionally, learners sometimes confuse 'krank sein' with 'weh tun' (to hurt). You don't say 'Mein Arm ist krank' if your arm hurts; you say 'Mein Arm tut weh'. 'Krank' refers to the whole person or a specific organ having a disease, not just localized pain.

Confusion with 'Müde'

Sometimes learners say 'Ich bin krank' when they are just exhausted. Use 'Ich bin müde' or 'Ich bin erschöpft' for tiredness.

A stylistic mistake is overusing 'krank sein' for minor discomforts. Germans tend to be specific. If you have a cold, you might say 'Ich bin erkältet' rather than the more general 'Ich bin krank'. If you have a fever, 'Ich habe Fieber'. Using 'krank sein' can sound a bit dramatic if you just have a sniffle. Lastly, watch out for the word order in questions. 'Bist du krank?' is correct, but learners often forget to invert the subject and verb. Also, ensure you don't confuse 'krank' (adjective) with 'Krankheit' (noun). You cannot say 'Ich habe krank'; it must be 'Ich bin krank' or 'Ich habe eine Krankheit'.

False Friends

In some English dialects, 'sick' means 'cool'. In German, 'krank' can mean 'crazy' in slang, but never 'cool' in the positive sense.

While krank sein is the standard term, German offers a rich variety of synonyms and related expressions that allow for greater precision. For example, erkrankt sein is a more formal, elevated version often used in medical reports or official news. If someone is 'an Grippe erkrankt', it sounds more clinical than 'er hat Grippe'. Another useful alternative is unpässlich sein, which is a somewhat old-fashioned and polite way to say someone is 'indisposed' or 'not feeling quite themselves'. It's perfect for declining an invitation without giving too many details about one's health.

Comparison: Krank vs. Erkrankt

'Krank' is everyday language. 'Erkrankt' is formal/medical. 'Er ist erkrankt' sounds more serious than 'Er ist krank'.

If you want to describe someone who is constantly ill or has a weak constitution, you might use the adjective kränklich (sickly). For someone who is bedridden, the term is bettlägerig. In casual conversation, Germans often use angeschlagen sein to mean they are 'under the weather' or 'starting to get sick'. It implies you are still functioning but not at 100%. Another colloquial term is marode, though this is often applied to things (like a 'marode Brücke' - a crumbling bridge), it can humorously describe a person feeling very physically worn out.

Comparison: Krank vs. Unwohl

'Krank' is a diagnosis. 'Unwohl' is a feeling. 'Ich fühle mich unwohl' means you feel uneasy or slightly sick.

For more serious conditions, you might hear leidend sein (to be suffering). This is often used for chronic or long-term illnesses. If someone is 'schwer leidend', they are very ill. On the opposite end, the word malad (from French) is used in some regions to mean 'feeling sick' or 'unwell'. Understanding these nuances helps you choose the right word for the right situation. While 'krank sein' will always be understood, using 'angeschlagen' or 'unpässlich' shows a higher level of language mastery and social awareness.

Comparison: Krank vs. Elend

'Elend' is much stronger. 'Ich fühle mich elend' means you feel absolutely miserable/terrible.