Allow
Open up
Open up verb - Cause to open or to become open.
Mutual synonyms
Both terms in one sentence
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The Mark VII armor (with cool features like panels on his chest that open up and allow repulsors to provide more vertical thrust) and its emergency deployment mechanism: The suit flies to Tony, locks in on his wristbands, pulls in and wraps itself around him.
Source: Technology Porn -
Door to Before: "Shortcuts" in dungeons allow you to freely travel through certain walls, but only open up when you've been to both sides.
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The RT-23 Molodets/SS-24 "Scalpel" missile trains were disguised as freight trains, but the roofs could open up to allow the nuclear missiles to launch.
Source: Cool Train
Cite this Source
Open up and Allow. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/allow/open_up
Allow & Open up. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/allow/open_up>.
Open up or Allow. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/allow/open_up.
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