They would not travel in usable paths, so they were never developed.
The result was that when the saddle of mutton was served, she had no usable knife.
No education is usable which has frills, Mr. Breeze insists.
His copy was certainly inaccurate in places, but it was usable.
If the edge is only slightly uneven it can be bent so that it is usable.
The fingers of Phineas's ...