i Register
In some senses, unavailable is marked as obsolete, US. Watch for register when choosing this word.
ADJ.
due, exasperating, likely, sorry, still
The manager was sorry but said the conference room would still be unavailable for another hour.
VERB + UNAVAILABLE
books, buy, dialed, must've, seen, services, tell, thought
The books you ordered are unavailable right now, but we can order them for you.
UNAVAILABLE + NOUN
japan, moment
The flight attendant explained that the vegetarian meal was unavailable at that moment.
PREP.
in
The manager was unavailable in the afternoon, so we rescheduled our meeting for tomorrow.
ADV.
currently, emotionally, temporarily
The manager was temporarily unavailable, so we rescheduled the meeting for next week.