konstanní

Konstanní is an archaic Czech adjective meaning "constant" or "unchanging." In contemporary Czech, the corresponding term is konstantní, while the noun for a mathematical or physical constant is konstanta. Konstanní occurs primarily in older literary and scholastic texts and is discussed by philologists as part of historical Czech orthography and vocabulary.

Origin and form: The form derives from the Latin constant-, which entered Czech through broader Central European linguistic contact. In older texts, orthographic conventions occasionally render the consonant cluster with a doubled n, producing konstanní. The spelling is now largely obsolete outside linguistic study, with konstantní predominating in modern usage.

Usage and attestations: The spelling "konstanní" is attested in a limited set of manuscripts and early printed works and is cited in studies of historical Czech dictionaries and glossaries. As an adjective, it conveyed qualities of permanence, stability, or invariability, functioning similarly to the modern "konstantní."

Modern relevance: Today, "konstanní" is of interest mainly to linguists and historians of the Czech language as an example of diachronic spelling and morphology. For general readers, the modern form "konstantní" is used in everyday language.

See also: konstantní, konstanta, constant, constancy, etymology of constant in Czech.