This is the 4406th most frequent German word.
gültig
Valid.
Here, 'gültig' is used as an adjective to describe the state of the ticket's validity within its valid period.
Das Ticket ist nur heute gültig.
The ticket is valid only today.
In this sentence, 'gültig' serves as an adjective indicating the ongoing effectivity of the contract.
Der Vertrag bleibt gültig, bis er gekündigt wird.
The contract remains valid until it is terminated.
The word 'gültig' is deployed as an adjective to convey the duration of the membership's validity.