Dreißigjährigen

Dreißigjährigen is a German term formed from the numerals dreißig (thirty) and jahrig (year-old). Used as a substantive, it denotes people who are thirty years old. In its plural, the normal written form is die Dreißigjährigen, with the initial D capitalized because it functions as a noun. The corresponding singular forms are der Dreißigjährige (masculine), die Dreißigjährige (feminine), and das Dreißigjährige (neuter), with the plural declined as der Dreißigjährigen, die Dreißigjährigen, or die Dreißigjährigen depending on case.

As a noun, Dreißigjährigen appears primarily in demographic, sociological, or descriptive writing to identify a specific age cohort. The term can be used in sentences such as “Unter den Dreißigjährigen steigt die Erwerbsquote” or “Die Dreißigjährigen zeigen andere Konsumgewohnheiten als Jüngere.” In everyday language, speakers more often use the phrase “Menschen, die dreißig Jahre alt sind” or the attributive adjective form “dreißigjährige Männer/Frauen” when describing individuals.

Linguistic notes: when the word is used attributively before a noun, the adjective remains lower-case: dreißigjährige Männer, dreißigjährige Arbeitnehmer. When it is used as a standalone noun, it is capitalized as Dreißigjährige (singular) or Die Dreißigjährigen (plural), with the cases following standard German declension: Genitive: der Dreißigjährigen; Dative: den Dreißigjährigen.

The term is primarily informational and descriptive rather than a fixed technical label, and it competes with more general phrases like “thirty-year-olds” in bilingual or international contexts.