lost

adjective8

1. •
   Having wandered from, or unable to find, the way.

   • The children were soon lost in the forest.
2. •
   In an unknown location; unable to be found.

   • Deep beneath the ocean, the Titanic was lost to the world.
3. •
   Occupied with, or under the influence of, something, so as not to notice external things.

   • to be lost in thought
4. •
   Parted with; no longer held or possessed.

   • a lost limb; lost honour
5. •
   Not employed or enjoyed; thrown away; employed ineffectually; wasted; squandered.

   • a lost day; a lost opportunity or benefit; no time should be lost
6. •
   Ruined or destroyed, either physically or morally; past help or hope.

   • a ship lost at sea; a woman lost to virtue; a lost soul
7. •
   Not perceptible to the senses; no longer visible.

   • an island lost in a fog; a person lost in a crowd
8. •
   Hardened beyond sensibility or recovery; alienated; insensible.

   • lost to shame; lost to all sense of honour