Someone who is extremely picky about all things sustainable. Will call other people on their unsustainable behaviour. Combination of sustainable and anal.
Mike is so sustainal, he criticized me for throwing my banana peel in the wrong bin.

Stop being sustainal, Mike, get a life!
by R-NO April 27, 2010
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The ability to achieve, and sustain a male erection.
At my age, sustainability is not a concern! Achievment is my greatest concern!
by talk2me-JCH2 April 22, 2021
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Sustainability is a lens through which to view all issues. The sustainability movement encompasses environmental justice and social justice, because one cannot be obtained without the other. It means living life to the fullest without compromising future generations' ability to do so. It respects the interconectedness of all life and acknowledges the responsibility that each person has to consider the effects that his actions have on other life forms, both living and to be born.
The sustainability revolution is begining! Watch out you styrofoam using, carbon cycle ignoring, TV worshiping members of American consumer culture.
by Holly and Melissa October 20, 2005
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The ability to endure a balence of economic, social and environmenal well being now and in the future.
by zMeeKeRz November 15, 2011
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She bearly sustained the bucket with one hand.
by iliiiii June 26, 2006
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A word that left leaning urban Caucasians coined to feel good about themselves.
Joe: I like shopping at Whole Foods because they have a strong sense of sustainability.

Mike: You want sustainability? Go find a piece of land, work that shit, do your own thing, quit being a pussy, and shut the fuck up!
by rastarealist April 8, 2010
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Repeatable indefinitely with no negative side effect whatsoever.
I think this new training schedule could be sustainable
by Xeidor August 27, 2023
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