Have no effect or influence on one, as in Ned’s attempts at humor were lost on Meg, or David’s kindness was not lost on his aunt. This expression uses lost in the sense of “wasted.” [ c. 1600 ]
Also see: you’ve lost me
noun 1. See under (def 1).
noun, Chiefly British. 1. .
noun 1. a river that flows into an underground passage or sinkhole.
noun 1. a mountain range in E central Idaho. Highest peak, Borah Peak (also highest in the state), 12,662 feet (3862 meters).