Verb pass up has 2 senses
  1. refuse, reject, pass up, turn down, decline - refuse to accept; "He refused my offer of hospitality"
    Sample sentence:
    They pass up the money
  2. pass up - fail to acknowledge; "he passed me up in the street"
    --2 is one way to
    ignore
    Sample sentence:
    Somebody ----s somebody
,
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