chybní

Chybný is a common Slavic adjective used in Czech and Slovak to describe something defective, faulty, erroneous, or incorrect. It can refer to objects, data, procedures, or statements that do not work as intended or do not meet factual or normative expectations. The term is widely used in everyday speech as well as in technical and formal writing.

Origin and forms: Chybný derives from the noun chyba, meaning error or fault. The adjective agrees with the gender and number of the noun it modifies, with common English translations including faulty, defective, or incorrect. In Czech and Slovak there are related adjectives such as vadný (defective) and nesprávný (incorrect) that express slightly different nuances of fault or inaccuracy.

Examples: A chybný program may crash or produce wrong results. A chybný údaj refers to an incorrect datum in a dataset. A chybný krok can describe a mistaken move in a procedure or strategy. In scientific or technical writing, chybná data or chybný odhad signals a fault in measurement or estimation.

See also: chyba (noun), vadný, nesprávný, správný. The term is used in both Czech and Slovak with similar meaning, and cognates or equivalents exist in other Slavic languages.