pop up

See also: popup and pop-up

English edit

pop up (third-person singular simple present pops up, present participle popping up, simple past and past participle popped up)

(intransitive) To come up with a "pop" sound.
The toast is in the toaster - when it pops up it will be ready.
(intransitive, informal, idiomatic) To appear without warning.
I can't remember where I left my keys, but they normally pop up somewhere.
- 2013 June 21, Chico Harlan, “Japan pockets the subsidy …”, in The Guardian Weekly, volume 189, number 2, page 30:
  Across Japan, technology companies and private investors are racing to install devices that until recently they had little interest in: solar panels. Massive solar parks are popping up as part of a rapid build-up that one developer likened to an "explosion."
(intransitive) (Of an alert, advertisement, etc.) To suddenly appear onscreen.
- 1994 September 8, Kendall Bullen, “COPYRIGHT POLICY”, in rec.games.frp‎^[1] (Usenet):
  […] 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).
(transitive) To display as an alert, advertisement, etc. that suddenly appears on screen.
My computer just popped up a warning about Internet security.

to appear without warning