geöffneten

Geöffneten is the declined form of the German past participle geöffnet, which means opened or opened and accessible. As a participle used as an adjective, geöffnet describes a state resulting from the action of öffnen (to open). The form geöffneten appears when the participle is attributive and the accompanying article or determiner requires that ending, most commonly in plural or in certain singular cases.

In practice, geöffneten occurs mainly in attributive position after definite or determiner-marked contexts. Examples include:

- Die geöffneten Fenster lassen viel Licht herein. (nominative/accusative plural)

- Wir gehen durch die geöffneten Türen. (accusative plural)

- Der Zustand der geöffneten Fenster ist gut. (genitive plural)

The ending can also appear in singular masculine or feminine forms in cases like dem geöffneten Mann (dative singular, masculine) or der geöffneten Tür (dative singular, feminine). In a language term, geöffneten is part of the weak or mixed declension of adjectives used with a definite article or other determiner.

Usage notes:

- Geöffneten is not used predicatively after a form of sein; for example, you say der Tür ist geöffnet, not der Tür ist geöffneten.

- In the plural without a definite article (strong declension), the form typically shifts to geöffnetes or geöffneten depending on case, but the common written form for plural after a definite article is geöffneten.

Etymology:

Geöffneten derives from öffnen plus the ge- prefix to form a past participle, combined with German adjective declension rules to yield the -en ending in the relevant cases and numbers.

See also: geöffnet, öffnen, German adjective declension, past participles in German.