Pop up

verb, slang

Definitions

Verb
  1. 1
    To come up with a "pop" sound. intransitive

    "The toast is in the toaster - when it pops up it will be ready."

  2. 2
    appear suddenly or unexpectedly; happen unexpectedly wordnet
  3. 3
    To appear without warning. idiomatic, informal, intransitive

    "I can't remember where I left my keys, but they normally pop up somewhere."

  4. 4
    (Of an alert, advertisement, etc.) To suddenly appear onscreen. intransitive

    "[…]where you should put the disclaimer for software (somewhere that the user sees it when they start the program, tho' I wouldn't do that, just put it in the 'about' box like the mpgn.com guy suggests -- otherwise, having something pop up makes it annoyware, IMHO)."

  5. 5
    To display as an alert, advertisement, etc. that suddenly appears on screen. transitive

    "My computer just popped up a warning about Internet security."

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