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This is a dynamic word that means negative in general.
1.It can be used in many contexts to mean; bad, cruddy, terrible and many others.
2.Rast can also be used to describe mood.
3.Rast can be used to as a curse word.

1. OH MAHN, this food is rast.
2. MAHN, I feel like rast.
3. RAST!!!!!
by johnson balls October 28, 2007
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(Noun) The period of relaxation immediatelely following any activity that promotes a higher consciousness. Derivitave of the "Rastafarian" religion. Usually associated with the enhanced awareness achieved by partaking of the cannabis sacrament.
"I used to hate Christmas, too, but... I'm feelin' pretty RAST, so let's go smoke out that homeless dude that's always chillin' outside the grocery store."
by howtostayaliveinthewoods December 08, 2009
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Something indescribably “cool” or “awesome.” Often used in casual banter between friends or extremely chill people.
“Dude did you see that movie last week?”
Yeah man it was totally rast!”
by Derpybacon07 August 14, 2018
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