It seems like you're asking about the term "pass up." This phrase can mean a few different things depending on the context:
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To decline an opportunity: For example, if someone offers you a job or an invitation and you decide not to accept it, you might say you "passed it up."
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To let something go by or miss it: This can apply to situations where you choose not to take action or don't take advantage of a situation.
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In sports: It could refer to a player choosing to pass the ball instead of taking a shot.
If you have a specific context in mind or need more information, feel free to clarify!