logisch

Logisch is a German adjective meaning logical, rational, or sensible. It describes reasoning, arguments, conclusions, or actions that conform to the principles of logic or are reasonable given the available information. In everyday speech it can also signal that something follows coherently from known facts or appears plausible.

Etymology and cognates: Logisch derives from the noun Logik (logic) and ultimately from the Greek logos, meaning reason or word, via Latin logicus. The English cognate is logical; related forms exist in French (logique), Spanish (lógico), and other languages.

Usage and phrases: In formal writing, logische Beweise, logische Form, and logischer Schluss are common terms in philosophy and mathematics. In everyday language, speakers say “das ist logisch” or “das ergibt Sinn,” and the word can function as an exclamation meaning that something is obvious or well reasoned. To negate, one says “nicht logisch” or “unlogisch” to describe something that does not follow rationally or is irrational.

Relationship to philosophy: The term is closely linked to discussions of logic and reasoning, but it is also used outside technical contexts to describe reasonable behavior or conclusions. In analytic contexts, “logisch” may accompany precise formulations or valid inferences, while in casual speech it signals overall coherence rather than formal proof.

See also: Logik (logic) and its cognates in other languages, such as English logical and logic.