1680s, from un- (1) "not" + churched "committed or belonging to a church" (see church (v.)). A verb, unchurch "to remove or exclude (someone) from membership in a church" is recorded from 1610s.
unchartered
unchaste
unchecked
unchivalrous
unchristian
unchurched
uncial
uncirculated
uncircumcised
uncivil
uncivilized