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lost

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adjective American English pronunciation: lost /lɔst/
  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

  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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