Top definition
The act of not acting right -- One who is not living up to par. Forgetful in doing what you're supposed to be doing.
Hey don't let the boss catch you slippen.

OR

I can't believe you forgot to pay the rent -- Man you're slippen!
by Chula July 18, 2006
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Jul 23 Word of the Day
A tourist to sub-orbital or orbital space, through commercial space flight programs.
Jeff Bezos and Richard Branson alongside their crew became the first astrotourists, while visiting sub-orbital space in July 2021
by AxonL July 20, 2021
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