Pop up
Pop up verb - Appear suddenly or unexpectedly.
Spring and pop up are semantically related. in come into sight topic. In some cases you can use "Spring" instead a verb "Pop up".
Both terms in one sentence
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To be more specific, Cal and Tom decapitate it in a guillotine (to be fair, they didn't think it would work) and when asked to repair it, the prop guys have a little fun and makes its head pop up on a spring and its eyes bug out.
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To enable an agent to slip away and empty a dead drop or meet an asset, two agents would be in a car and as it turned a corner, one agent would jump out and a dummy on a spring contraption would pop up in the car seat.
Source: Sleeping Dummy
Cite this Source
Spring and Pop up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/pop_up/spring
Pop up & Spring. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/pop_up/spring>.
Spring or Pop up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/pop_up/spring.
Google Ngram Viewer shows how "pop up" and "spring" have occurred on timeline