Open up
Open up verb - Cause to open or to become open.
Both terms in one sentence
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After a hitman tries to kill the witness, Castler and Beckett decide that the only way to get the witness to open up is to have everyone pretend that it is 1978 and dress and act accordingly.
Source: Obfuscating Insanity - Sometimes they're teleported in, possibly around the corner where you can't see them so the game can pretend they were there already, and sometimes they come out of hidden rooms that open up and disgorge them (which is often called "Monster Closet" gameplay).
Source: Teleporting Keycard Squad
Cite this Source
Pretend and Open up. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/open_up/pretend
Open up & Pretend. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/open_up/pretend>.
Pretend or Open up. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/open_up/pretend.
Google Ngram Viewer shows how "open up" and "pretend" have occurred on timeline