zasadno

Zasadno is a Polish adverb that is rarely used in modern standard Polish. It is generally regarded as archaic or dialectal and is most often found in older texts or regional speech. The term is related to zasadny (principled, justified) and ultimately to zasada (principle, rule), sharing a semantic field linked to justification and normative grounds. In contemporary language, speakers more commonly use zasadnie to mean “properly” or “justifiably,” or they employ the prepositional phrase z zasady meaning “as a matter of principle.”

Etymology and form: Zasadno derives from a family of words built from zasada, via the adjective zasadny, with derivational suffixes that yield related adverbs. Its occurrence as zasadno is largely limited to historical or regional contexts, and it is not a standard contemporary form.

Usage and register: Because of its rarity, zasadno is typically noted in dictionaries as an obsolete or marked variant. In everyday writing and speech, speakers favor z zasady for the sense of acting on principle or, less literally, zasadnie to mean “properly” or “justifiably.” If zasadno appears, it tends to impart a formal, old-fashioned, or literary tone.

See also: zasada, zasadny, zasadnie, z zasady.

References: Polish dictionaries and linguistic references that document historical or dialectal variants of the zasad- word family.