keep a sharp lookout (for something or someone)(redirected from keep a sharp lookout for them)
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keep a sharp lookout (for something or someone)
To remain vigilant or carefully watchful (for something or someone). They should be arriving any minute, so keep a sharp lookout. Keep a sharp lookout for a Christmas present we could give your mother. Keep a sharp lookout for the health inspector, we heard he'll be doing a surprise inspection someday soon.