gültig sein

You use it just like 'to be valid' in English. The word gültig is an adjective. You pair it with the verb sein (to be). You can use it for physical items like passports. You can also use it for abstract things like arguments or laws. Just remember to conjugate sein to match your subject. For example, Das Ticket ist gültig (The ticket is valid).

Use this at the train station when checking your pass. Use it at the supermarket when using a coupon. It is perfect for professional meetings too. If someone makes a point, you can say it is a gültiges Argument. It sounds smart and precise. You will hear it constantly in any German office or government building. It is the language of 'yes, this is allowed.'

Don't use it for food that has gone bad. For milk, use abgelaufen (expired) or schlecht (bad). Gültig is for rules and documents, not yogurt. Also, don't use it for personal feelings. You wouldn't say your love is gültig. That sounds like a cold legal contract. Keep it to things that have stamps, dates, or logic.

Germany loves its documents and certifications. Being gültig is a high honor for a piece of paper. There is a certain peace of mind in knowing your Ausweis (ID) is gültig. It reflects the cultural value of clarity and 'Ordnung' (order). If it's not gültig, it basically doesn't exist in the eyes of the system. It’s the difference between a smooth day and a bureaucratic nightmare.

You will often see ungültig, which means invalid. It's the dreaded word on a ticket machine. You might also hear rechtsgültig. This means 'legally binding.' Another common one is ab sofort gültig. This means 'valid starting right now.' It’s great for announcing new house rules to your roommates!