un ‧ a ‧ vail ‧ a ‧ ble AC /ˌʌnəˈveɪləb ə l/ BrE AmE adjective [not before noun]
[ Word Family: noun : ↑ availability ; adjective : ↑ available ≠ ↑ unavailable ]
1 . not able to be obtained:
Funding for the new school is unavailable.
unavailable to
materials that were unavailable to researchers in the past
2 . not able or willing to meet someone
unavailable for
Officials were unavailable for comment (=not able or willing to talk to reporters) .