if a situation is looking up, it is getting better
Example: A change in the rhythm of his father's breathing made him look up.
to go and see someone who you know when you are visiting the place where they live
Example: Finally, things are looking up for me.
to try to find a particular piece of information by looking in a book or on a list, or by using a computer
Example: He had to lean far back to look up at Abraham Sinclair's rich house.
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