ální

ální is a common adjectival suffix used in Czech and, in a parallel form, in related Slavic languages to form adjectives that mean related to, or pertaining to, a base noun or stem. In Czech, the suffix appears as -ální and is productive in contemporary vocabulary, contributing to a wide range of adjectives in everyday, technical, and formal usage. The resulting words typically describe a relation to the base concept, such as place, material, profession, or characteristic.

Examples in Czech include regionální (regional), materiální (material), profesionální (professional), radikální (radical), and centrál ní forms like centrální (central) in compound contexts. These adjectives can modify nouns in sentences and often have corresponding adverbs formed with a separate suffix (for example, regionálně means regionally). The exact form can involve phonetic adjustments at the stem boundary, but the -ální ending remains the identifying marker of this adjective class.

Slovak has a closely related pattern with a parallel suffix -álny, producing adjectives such as regionálny (regional) that function similarly to Czech -ální forms. Other Slavic languages may employ different but cognate suffixes, such as Polish -alny, reflecting the same broad idea of “pertaining to.”

In usage, -ální adjectives are part of standard descriptive vocabulary and appear in academic, technical, and media texts. They are typically declined like other Czech adjectives and agree with the noun's gender and number.