Words similar to unavailable

Example sentences for: unavailable

How can you use “unavailable” in a sentence? Here are some example sentences to help you improve your vocabulary:

4) The American standard is unavailable for legitimate reasons (I've already mentioned all the obstacles).
Data from one household (F) were unavailable.
Arabidopsis was used as the primary outgroup (95 out of 100 proteins in the four-taxon analysis, 94 out of 100 proteins for the five-taxon analysis, all proteins in Brugia and Trichinella analyses); yeast was used as the outgroup when Arabidopsis sequences were unavailable or paralogous.
Jack Deacy, a spokesman for Administration for Children's Services, was unavailable for comment.
How insightful you are to use the word "unavailable."