gleichzeitigen

Gleichzeitigen is not a standalone word, but the declined plural attributive form of the German adjective gleichzeitig, meaning simultaneous or occurring at the same time. It is used when the adjective appears directly before a plural noun and the noun is preceded by a determiner that marks case and number, such as der, den, des, or den. In this position the adjective takes the ending -en (weak declension).

Examples:

- Die gleichzeitigen Ereignisse erforderten sofortige Maßnahmen. (nominative plural)

- Der Einfluss der gleichzeitigen Entwicklungen wurde analysiert. (genitive plural)

- Den gleichzeitigen Ereignissen standen unterschiedliche Optionen gegenüber. (dative plural)

- Die gleichzeitigen Maßnahmen wurden umgesetzt. (accusative plural)

Usage notes:

- Gleichzeitig functions as an adjective or modifier and contrasts with gleichzeitig used adverbially, where it remains uninflected: Die Ereignisse liefen gleichzeitig ab.

- When no definite determiner is present, the strong or mixed declension may yield andere Formen such as gleichzeitige oder gleichzeitige Ereignisse, depending on the determiners or numerals used.

- The form gleichzeitigen is particularly common in formal or written German due to the definite article or similar determiners clarifying case and number.

Etymology and meaning:

- The word is a compound of gleich (same, equal) and zeitig (timely), deriving from the sense of two or more things happening at the same time.

See also:

- Gleichzeitigkeit (simultaneity)

- Zeitgleich (time-equal, synonymous synonym)

- Simultan (synonym in some contexts)

Summary:

Gleichzeitigen serves as the standard plural attributive form of gleichzeitig in contexts where the noun is plural and determined, conveying that multiple events or phenomena occur at the same time.