unavailable
adj. B1 Intermediate US //ˌənəˈveɪɫəbəɫ// UK //ʌnɐvˈeɪləbəl// un·avail·able
adj. not able to be used, bought, or reached at the moment. You use this when someone is busy or a product is out of stock.
adj. not accessible, obtainable, or free to be used or consulted. Often follows a linking verb and can be modified by degree adverbs like 'currently' or 'temporarily'.
The manager is unavailable for a meeting today.
I tried to book a room for the weekend, but the website said all suites were unavailable.
Due to a sudden server failure, the digital archives remained unavailable to researchers for several days while the IT department worked to restore the backup data.
From un- + available.
Usage
Often follows a linking verb like 'be' or 'become'; frequently paired with the preposition 'to' ('unavailable to the public').