cký

cký is a suffix used in the Czech language to form adjectives that express relation, origin, or belonging to a noun or place. It is part of a broader set of adjectival endings, most notably -ský, with which many nationalities and toponyms are described (for example český, moravský, slovenský, rakouský). The suffix denotes that the noun it modifies relates to the root word's referent.

In standard Czech, adjectives formed with this suffix agree with the noun in gender, number, and case. The masculine singular nominative form typically ends in -ký; the feminine singular nominative ends in -ská; the neuter singular nominative ends in -ké. Plural forms differ by gender. The root of the adjective is usually a stem derived from a noun or proper name, and the suffix -ký originates in a common Slavic pattern shared across languages.

Etymology and cognates: The Czech -ký ending is cognate with the Polish -cki and the Russian -ский endings, reflecting common Slavic history. Across languages the suffixes serve to convert nouns into adjectives or demonyms.

Usage: The cký ending appears in adjectives that denote nationality, regional origin, or other relational attributes. It is common in toponyms and ethnonyms and often functions to create descriptors used in official and written language.

See also: Czech grammar, Slavic morphology, Czech adjectives, toponymy, demonyms, suffixes in Slavic languages.