adjective
BAD : This morning I noticed that my purse was lost.
GOOD : This morning I noticed that my purse was missing.
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If something is not in the place where you left it and you cannot find it anywhere, it is missing (NOT lost ): 'Police are still searching for the missing diamonds.' 'She was making her way towards immigration when she discovered that her passport was missing.'
Compare: 'Oh no! I've lost my passport!'