(1) Northwest Airlines refused to make refunds for the unusable tickets.(2) I absolutely hate it when installing something screws your PC up so much that it is unusable .(3) Industry standards dictate that the 2000 survey figures are unusable and out of date.(4) It is great to have expansive fields around the school, but unfortunately in wet weather they become unusable for some time.(5) Some ranchers found that water became unusable after seismic testing alone.(6) The mere rumour of a landmine can render a community's fields unusable .(7) This extension to the route is unusable for wheelchair users.(8) Four times now, I have accidentally rendered the site unusable .(9) Often the mines have been laid in agricultural land, making it unusable and so a jungle grows up, making the mines even more difficult to find.(10) Most of the equipment was unusable because of damage and contamination but some was sent away for sterilisation.(11) Lack of maintenance and removal of parts from older ships made them potentially dangerous and often unusable during a war.(12) Windows in each classroom are at a height of 1.8m and thus are rendered unusable for fire escape.(13) Vandals have badly damaged seafront steps, leaving them unusable .(14) When I bought the place, it was open to the sky and there were ferns and trees growing there - it was just an unusable and unpassable area.(15) The test was designed to simulate what would happen if their offices became unusable in the event of a wide-scale power loss or crowd trouble.(16) It's completely unacceptable that CD-Rs become unusable in less than two years.
