jednostajnym

Jednostajnym is the instrumental singular masculine and neuter form of the Polish adjective jednostajny, which means uniform, steady, constant or regular. The basic sense covers things that proceed with regularity and without variation. The feminine form is jednostajną, the neuter nominative is jednostajne, and in plural forms it appears as jednostajnymi in the instrumental plural. This word is commonly used in technical and everyday language to describe tempo, motion, cadence, or any process that shows little or no fluctuation.

In grammar, jednostajny and its declined forms agree with the noun they modify in gender, number and case. The instrumental form jednostajnym is used when describing the manner of an action or state in constructions with certain prepositions or verbs, such as w jednostajnym tempie (at a uniform pace) or ruchem jednostajnym (in uniform motion). The phrase ruch jednostajny, a staple term in physics, uses the base form to denote motion with constant velocity, while contexts like muzyka or daily narration may employ easier synonyms such as równomierny or stały.

Usage across domains tends to emphasize regularity and predictability. In physics and mathematics, jednostajny is closely associated with concepts of constancy; in everyday language, it can convey both a neutral sense of regularity and a slightly negative nuance of monotony or dullness, depending on context. Related terms include równomierny, stały, and regularny, which can be used as synonyms in many cases but carry slightly different connotations.

Etymology traces jednostajny to the root form linked with the noun jednostajność (uniformity, consistency), with the suffixes characteristic of Polish adjectives. The word belongs to standard Polish and is widely understood in formal and technical text as well as in common speech.