theorist
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theorist
A person who mainly deals with the theory of a field and develops concepts or models, often in contrast to someone who focuses on practical application (the practitioner).
Als reiner Theoretiker hatte er Schwierigkeiten, seine Ideen in die Praxis umzusetzen.
As a pure theorist, he had difficulty putting his ideas into practice.
armchair theorist
A derogatory term for someone whose ideas are seen as unrealistic, complicated, and impossible to implement in practice.
Sei doch kein Theoretiker und pack einfach mit an!
Don't be such an armchair theorist—just pitch in!
The word is derived from 'die Theorie' (the theory). The ending '-iker' refers to a male person who works professionally or intensively with a particular field, as in 'Physiker' (physicist) or 'Informatiker' (computer scientist).
Als junger Theoretiker entwickelte er ein völlig neues Modell.
As a young theorist, he developed a completely new model.
In its neutral meaning, 'Theoretiker' (theorist) is often used as the opposite of 'Praktiker' (practitioner). This contrast emphasizes the difference between conceptual work and practical application.
In unserem Team ergänzen sich ein Theoretiker und zwei Praktiker ideal.
In our team, one theorist and two practitioners complement each other perfectly.
The derogatory meaning can often be recognized from the context. It is usually used in everyday situations as criticism when someone is perceived as unrealistic or impractical.
Hör auf, nur zu reden, du Theoretiker, und hilf uns lieber!
Stop just talking, you armchair theorist, and help us instead!
