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adjective lost pronunciation in American English /lɔst/
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  1. 1
    not knowing where you are or how to get to where you want to go
    We’re completely lost.
    get lost: They decided to drive to New York and ended up getting lost.
  2. 2
    if something is lost, you cannot find it
    The keys are lost somewhere in the house.
  3. 3
    [only before noun] not existing anymore, or not likely to exist anymore
    The strike has cost the airline $3 million in lost revenue.
    a poem about lost innocence
  4. 4
    lost time or chances have been wasted
    The team’s season has been littered with missed opportunities and lost chances.
  5. 5
    [not usually before noun] not feeling confident or relaxed because you are in a new situation, for example with a group of people who you do not know
    Mark looked a little lost among all those trendy designers.
    Nothing was the same any more. I felt lost.
  6. 6
    completely destroyed
    The group is working to preserve old buildings that could otherwise be lost.
  7. 7
    killed, especially while fighting in the military
    lost in battle: a memorial to all soldiers lost in battle
    lost at sea: a ceremony to commemorate those lost at sea in World War Two
    Synonyms and related words
  8. 8
    [never before noun] too interested in something, or concentrating so hard on it, that you do not notice other things around you
    lost in something: Grayson became lost in the music.
    lost in thought: Martin was lost in thought and did not hear the door open.
    lost to the world: Look at them watching their video. Completely lost to the world!
  9. 9
    [never before noun] unable to understand something because it is extremely complicated
    I was completely lost after the first paragraph.

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