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theory concept hypothesis
نظرية مفهوم فرضية
teoría concepto hipótesis
نظریه مفهوم فرضیه
théorie concept hypothèse
सिद्धांत धारणा परिकल्पना
teoria concetto ipotesi
理論 概念 仮説
teoria pojęcie hipoteza
teoria conceito hipótese
teorie concept ipoteză
теория концепция гипотеза
teori kavram varsayım
теорія концепція гіпотеза
理论 概念 假设

die  Theorie
B2
Estimated CEFR level.
/teoˈʁiː/

💡 What does "die Theorie" mean?

Die Theorie (noun, feminine) generally refers to a system of statements, rules, or principles used to explain or describe a specific area of reality. It can refer to:

  • A scientific model: A structured explanation of phenomena, often based on observations and experiments (e.g., die Evolutionstheorie - evolutionary theory, die Relativitätstheorie - relativity theory).
  • A hypothesis or conjecture: An unproven assumption or idea (e.g., "Das ist bisher nur eine Theorie." - "So far, that's just a theory.").
  • Abstract doctrine or speculation: As opposed to practical application or experience (e.g., "In der Theorie klingt das gut, aber die Praxis sieht anders aus." - "In theory, that sounds good, but practice looks different.").

It's a central term in science, philosophy, and everyday language for naming concepts and explanatory approaches.

Article rules for der, die, and das

-ie almost always feminine.

Examples: die Akademie · die Aktie · die Analogie · die Anatomie · die Autoindustrie · die Autonomie · die Bat...
⚠️ Exceptions: das Genie · das Knie

-e/-ee almost always feminine.

There are many -e nouns, many of which are feminine, but there are also some important exceptions.

Examples: die Akte · die Annahme · die Ansage · die Aussage · die Banane · die Behörde · die Biene · die Dusch...
⚠️ Exceptions: das Baguette · das Feature · das Release · der Abgeordnete · der Angehörige · der Angestellte · der ...

📐 Grammar of "die Theorie" in Detail

"Theorie" is a feminine noun and therefore uses the article "die". It is declined as follows:

Declension Singular
Case Definite Article Indefinite Article
Nominative (Nom) die Theorie eine Theorie
Genitive (Gen) der Theorie einer Theorie
Dative (Dat) der Theorie einer Theorie
Accusative (Acc) die Theorie eine Theorie
Declension Plural
Case Definite Article Indefinite Article
Nominative (Nom) die Theorien - Theorien / some theories
Genitive (Gen) der Theorien - Theorien / of some theories
Dative (Dat) den Theorien - Theorien / to some theories
Accusative (Acc) die Theorien - Theorien / some theories

Example Sentences:

  1. Die Relativitätstheorie revolutionierte die Physik.
    (The theory of relativity revolutionized physics.)
  2. Er entwickelte eine neue Theorie zur Entstehung des Universums.
    (He developed a new theory about the origin of the universe.)
  3. In der Vorlesung wurden verschiedene Theorien diskutiert.
    (Various theories were discussed in the lecture.)
  4. Ich habe Zweifel an der Gültigkeit dieser Theorie.
    (I have doubts about the validity of this theory.)
  5. Zwischen Theorie und Praxis gibt es oft eine Lücke.
    (There is often a gap between theory and practice.)

🗣️ How "die Theorie" is Used

"Die Theorie" is used in many contexts:

  • Science & Research: Here, "Theorie" is an established term for an explanatory model (e.g., Quantentheorie - quantum theory, Spieltheorie - game theory).
  • Philosophy: To denote systems of thought or doctrines (e.g., Erkenntnistheorie - epistemology, Ethiktheorie - ethical theory).
  • Everyday Language: Often in contrast to practice ("In der Theorie sollte das funktionieren..." - "In theory, this should work...", "Das ist ja nur graue Theorie." - "That's just grey theory/abstract theory.") or to express a conjecture ("Ich habe da so eine Theorie..." - "I have a theory about that...").

⚠️ Important: In a scientific context, a Theorie is more than just a guess; it's a well-founded and often tested model. In everyday life, the term is sometimes used more loosely.

There's little risk of confusion as the term is quite specific. The adjective is theoretisch (theoretical).

🧠 Mnemonics for "die Theorie"

For the article 'die': Many German nouns ending in -ie are feminine (die): die Biologie, die Akademie, die Energie... and also die Theorie! Imagine a wise woman (die Weise) thinking about theories.

For the meaning: The word sounds very similar to the English "theory". Imagine someone saying, "This sounds like a *theor-y*!" when they get a new idea or explanation.

🔄 Synonyms & Antonyms

Synonyms (similar words):

  • Hypothese: Hypothesis (an unproven assumption, often the starting point for a theory).
  • Konzept: Concept (a mental draft, plan, or idea).
  • Modell: Model (a simplified representation of reality for explanation).
  • Lehre / Lehrsatz: Doctrine / Theorem (a system of principles or dogmas).
  • Annahme / Vermutung: Assumption / Conjecture (more in the everyday sense).

Antonyms (opposite words):

  • Praxis: Practice (the practical application or execution).
  • Erfahrung: Experience (knowledge gained through experience).
  • Fakt / Tatsache: Fact (something proven or objectively given).
  • Realität / Wirklichkeit: Reality (what actually exists).

Similar words: The adjective theoretisch (theoretical) is directly derived.

😂 A Joke about Theorie

German: Was ist der Unterschied zwischen Theorie und Praxis?

In der Theorie gibt es keinen Unterschied zwischen Theorie und Praxis. In der Praxis schon.

English: What's the difference between theory and practice?

In theory, there is no difference between theory and practice. In practice, there is.

✍️ Poem about Theorie

German:
Die Theorie, ein luftig Schloss,
aus Gedanken fein gesponnen,
erklärt die Welt, den großen Stoß,
hat manchen Kampf gewonnen.

Doch steht sie fern, auf hohem Grat,
die Praxis ruft von unten.
Was nützt der schönste, kluge Rat,
wird er nicht angewandt in bunten Stunden?

English Translation:
The theory, an airy castle,
finely spun from thoughts,
explains the world, the great impact,
has won many a battle.

But it stands distant, on a high ridge,
practice calls from below.
What use is the finest, clever advice,
if not applied in colourful hours?

🧩 Riddle: What am I?

German:
Ich bin ein Gerüst aus Ideen, kein festes Haus.
Ich versuche zu erklären, wie die Welt aussieht, ohne Applaus.
Manchmal bin ich bewiesen, manchmal nur gedacht.
Oft steh ich im Gegensatz zur praktischen Macht.

Was bin ich?

Answer

Die Theorie

English Translation:
I am a framework of ideas, not a solid house.
I try to explain what the world looks like, without applause.
Sometimes I am proven, sometimes just thought.
Often I stand in contrast to practical might.

What am I?

Answer

The theory (Die Theorie)

🌐 Other Information

Word Origin (Etymology): The word "Theorie" comes from the Greek word θεωρία (theōría), meaning “contemplation”, “speculation”, “a looking at”, “thing looked at”, or “scientific contemplation”. It entered German via the Latin theōria.

Compounds: Theorie forms many compound words, mostly in academic fields, e.g., Verschwörungstheorie (conspiracy theory), Systemtheorie (systems theory), Musiktheorie (music theory), Erkenntnistheorie (epistemology).

📝 Summary: is it der, die or das Theorie?

The noun "Theorie" is feminine. The correct article is always die: die Theorie.

🤖

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