najniszy

Najniszy is generally considered a misspelling of najniższy in standard Polish. The word najniższy means “the lowest” or “the shortest” and is the superlative form of niski (“low”). In everyday usage, najniższy is the correct form when referring to height, quantity, or degree.

In Polish, the superlative is formed by adding the prefix naj- to the comparative form of an adjective. The adjective niski yields the comparative niższy, and the corresponding superlative is najniższy. This construction applies both to physical height (najniższy budynek – the lowest building) and to abstract measures (najniższy koszt – the lowest cost). The form najniższy is standard across formal and informal writing.

Najniszy is not recognized as a correct standard form by major dictionaries and spelling checkers. It is typically treated as a typographical or orthographic error, often resulting from dropping diacritics or from confusion with the stem niższy. When correcting texts, najniższy should be used in all cases where the meaning is “the lowest” or “the shortest.”

See also: niski (low), niższy (lower), najniższy (the lowest), najwyższy (the highest).