Plochými

Plochými is the instrumental plural form of the Czech adjective plochý, meaning flat, level, or planar. In Czech grammar, adjectives agree with the nouns they modify in gender, number, and case. The instrumental plural ending for adjectives is typically -ými, so plochými is used when describing plural nouns in the instrumental case. This form often appears in phrases describing features, surfaces, or shapes that are flat or lacking relief, especially after prepositions such as s (with) or bez (without).

The base word plochý derives from plocha, meaning surface or area. Ploshý is commonly used across contexts such as architecture, engineering, and everyday description to denote flatness, lack of curvature, or uniformity.

In usage notes, plochými is specifically a form you will encounter with plural nouns in the instrumental case, for example in phrases like se plochými povrchy (with flat surfaces). It is one of several inflected forms of the adjective plochý, reflecting standard Czech declension patterns.

Related terms include the base adjective plochý and the noun plocha; together they form a family of words used to discuss flatness and surface properties.