German Phrase
Alle Fenster sind zu.
Meaning
This phrase is a simple and direct way to indicate that every window in a room or building is shut. It utilizes the common adverb 'zu' to describe the state of being closed, which is more frequent in spoken German than the formal participle 'geschlossen'.
When to use
Use this phrase when performing a final check before leaving your home or during cold weather to ensure no heat is escaping. It is also common in household chores or security contexts.
✦Grammar Breakdown
AlleFenstersindzu
Alle (All)
This is a plural determiner that must agree with the plural noun it precedes.
Fenster (Windows)
The word 'Fenster' is identical in its singular and plural forms; context and accompanying words indicate the number.
zu (closed)
In daily conversation, 'zu' is the preferred way to say closed, whereas 'auf' is used for open.
🗨In Conversation
Hast du das Haus kontrolliert?
Did you check the house?
Ja, alle Fenster sind zu.
Yes, all windows are closed.
✕Common Mistakes
Alles Fenster sind zu.
Use 'alle' for plural nouns; 'alles' means 'everything' and is used as a standalone pronoun.
Alle Fenster ist zu.
Since 'Fenster' is plural in this context, the verb must be 'sind' instead of the singular 'ist'.
↔Alternatives
Die Fenster sind alle geschlossen.
The windows are all closed (more formal).
Sämtliche Fenster sind zu.
Every single window is closed.
Cultural Tip
In Germany, there is a strong cultural emphasis on 'Stoßlüften', which involves opening windows wide for a few minutes to refresh the air. Consequently, checking if 'Alle Fenster sind zu' is a common routine before leaving the house or going to bed to maintain the home's temperature and security.