i Register
In some senses, unavailable is marked as obsolete, US. Watch for register when choosing this word.
adj
Unavailing; ineffective.
To recriminate now, he said, would be as exasperating as unavailable.
Not available.
This product is unavailable at the moment, but we hope to order more by next week.
A cold, reserved man, he was seen as emotionally unavailable.
noun
A communist who operated underground and was therefore not available for a political leadership position.