Open up
Open up verb - Cause to open or to become open.
Mutual synonyms
Both terms in one sentence
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When the Mane Six unlock the Rainbow Power of the Elements of Harmony, they open up a chest of whoop-ass on Tirek.
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Painful Rhyme: Invoked on the writers' part, and lampshaded by Dylan, during Marnie's failed attempt to unlock Aggie's gate:Big iron lock that keeps us out, open up your big iron mouth!
Source: Film / Halloweentown - Shooting it will do one of two things: unlock a nearby secret (which is usually obvious) or open up a Monster Closet right over your head (which is usually NOT obvious).
Source: Schmuck Bait / Video Games
Cite this Source
Unlock and Open up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/open_up/unlock
Open up & Unlock. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/open_up/unlock>.
Unlock or Open up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/open_up/unlock.
Google Ngram Viewer shows how "open up" and "unlock" have occurred on timeline