(UN-1 12.)
Also, in recent use, unavailability.
1548. Geste, Pr. Masse, E j b. Whych dyde [= deed] as it is a grounded proufe of falshode so of ye vnauaileablenes of ye masse.
1599. Sandys, Europæ Spec. (1605), L 3 b. Doubting else the vnavaileablenesse of those former inconveniences.
1611. W. Sclater, Key (1629), 130. Vncertaintie, vnprofitablenesse, and vnauaileablenesse eyther to decline wrath, or procure saluation. Ibid. (1638), Serm. Experimentall, 63. The unavailablenesse of all outward benefits, to stead us in the day of Gods wrath.
1829. E. Bather, Serm., II. 561. The utter unavailableness of mans presumed merits.
1870. Ruskin, Lect. Art, v. 123. The impossibility of using it [oil-colour] with safety and its unavailableness for note-book sketches and memoranda.