https://www.merriam-webster.com/dictionary/unopenable
UNOPENABLE Definition & Meaning - Merriam-Webster
The meaning of UNOPENABLE is incapable of being opened : not openable. How to use unopenable in a sentence.
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https://www.tomshardware.com/video-games/28-years-later-unopenable-door-in-super-mario-64s-cool-cool-mountain-has-been-opened-without-hacks
28 years later, unopenable door in Super Mario 64's Cool, Cool Mountain has been opened without...
May 12, 2024 - It doesn't actually save time for the speedrunners who discovered it, but not everything is for higher scoring