mastných

Mastných is the genitive plural form of the Czech adjective mastný, which means greasy, fatty, or oily. The base adjective describes substances that contain fat or fat-like qualities, and it can also be used in a broader sense to indicate richness or heaviness in content.

Grammatical use: Mastných is the form used when the noun it modifies is in genitive plural. Examples include phrases such as omezení mastných potravin (limiting fatty foods) and obsah mastných kyselin (content of fatty acids). Like other Czech adjectives, mastný declines across gender, number, and case; mastných specifically marks genitive plural.

Usage notes: In contemporary Czech, mastný typically refers to fat content or greasiness in foods and substances. It is often contrasted with tučný, which more frequently conveys richness or caloric density, and with zdravě, where appropriate, to discuss health implications. The choice between mastný and related terms depends on nuance and fixed collocations in culinary, nutritional, and biomedical contexts.

Etymology and related forms: The adjective mastný is derived from the Czech noun masť (fat, lard) and is part of a family of words connected with fat and greasiness. Related nouns include masť (fat) and tuk (fat or fat tissue), and related adjectives include tučný and ztučnělý in certain contexts.

See also: mastný (the base form), masť, tuk, tučný.