Impossible or difficult to maintain a schedule
She is described as being unscheduleable.
by March 9, 2021
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Unsceduable: when you think that you can control an outcome outside of your control:
God is an Unschedulable Lord.
He blesses me when I stop trying to control the outcome of my prayer.

Because He is an Unschedulable Lord.
He blesses me when you just stop.
by Stephen Furtick October 15, 2021
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Something that the company Nexon does when the game Maplestory is down for everyone
Mapler: Hey GM, when will unscheduled maintenance end?
GM: i don't know or care just give me your money!
Mapler: :(
by TheCity_ December 2, 2016
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"RUD" for short. In high-power hobby rocketry, an unforeseen event usually attributed to an exploding rocket motor that send pieces of the rocket in every direction, quickly.
That rocket just suffered a "Rapid Unscheduled Disassembly"... DUCK
by Paxarcanum April 30, 2011
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Unplanned Explosion.
Just after take off the rocket made an unscheduled rapid disassembly.
by mlhiss April 20, 2023
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A shit cramp that comes from out of nowhere at a very inconvenient time and place!!!
"Hey Ted I'll be right back, I have to take care of an unscheduled shit cramp!!!"
by LillDaryl September 6, 2023
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