funkcyjne
Funkcyjne is a Polish adjective derived from the noun funkcja (function). It describes something related to a function, or designed to perform a particular function. The form is used to distinguish practical, operation-oriented aspects from decorative or aesthetic ones, for example cechy funkcyjne (functional features) or projekt funkcjonalny (functional design).
In usage, funkcyjne appears in technology, science, and design. Common phrases include klawisze funkcyjne (function keys
Etymology: the word is built from funkcja (function) with the suffix -cyjny, yielding funkcyjny in masculine
See also: functional programming, function keys, functional language.