jasno

Jasno is a Polish word with several related meanings tied to light, visibility, and clarity. As an adjective, jasny describes something bright or light in color, such as jasny kolor or jasne światło. As an adverb, jasno means clearly or plainly, indicating the manner of an action or the degree of visibility, for example Wyjaśnił to jasno (He explained it clearly) or Światło świeci jasno (The light shines clearly/brightly). The noun form jasność denotes brightness or clarity, while the related adjective przejrzysty conveys transparency or clearness in a different sense.

Historically, jasno derives from the root of the adjective jasny, which in turn comes from the Proto-Slavic word set meaning brightness. The term has cognates across Slavic languages that reflect similar senses of light and clarity. In modern Polish, jasno is invariable when used as an adverb, although its meaning can shift slightly with context—from daylight and color to rhetorical or procedural clarity.

Usage and nuance: jasno is used for daylight and visibility (Jest jasno na dworze), for describing light colors (śnieg jest jasno biały), and in statements about understanding or explanation (Zostało to powiedziane jasno). In colloquial speech, the interjection Jasne! is common and means “Sure” or “Understood,” signaling agreement or acknowledgement.

See also: brightness (jasność), color terms using jasny, and phrases indicating clarity or transparency.