Kwasowi

Kwasowi is the dative singular form of the Polish masculine noun kwas, which means acid or a sour-tasting substance. As a grammatical inflection, kwasowi appears whenever the noun kwas functions as an indirect object or is governed by a preposition that requires the dative case in Polish.

The noun kwas has the typical masculine singular declension: Nominative kwas, Genitive kwasu, Dative kwasowi, Accusative kwas, Instrumental kwasem, Locative kwasie, and Vocative kwasie. Therefore, kwasowi is a standard form in scientific or instructional contexts where acids are discussed and the acid is the recipient or indirect object of an action or prepositional phrase.

In usage, kwas refers to chemical acids, such as hydrochloric acid (kwas solny) or organic acids, and the term also appears in historical or everyday language related to sourness or fermentation. The etymology traces back to a Proto-Slavic root meaning sour, with related terms in other Slavic languages; this root constrains both the contemporary meaning of kwas and its influence on related words, such as the adjective form kwaśowy meaning acidic or sour, and the noun kwaśność meaning acidity or sourness.

Kwasowi is distinct from the adjective forms derived from kwaśowy, which decline differently (for example, kwaśowego, kwaśowemu). Understanding kwasowi thus requires recognizing its role as a case form rather than as an independent lexical item.

See also: kwas, kwaśność, kwaśowy, Polish grammar, declension.