2
Become more relaxed, easygoing, or genial.
"John is so mellow even though he is just twelve years old"
by rhyzx March 13, 2006
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3
not being completely high. on the borderline to where you feel chill and zone out, but you dont geek out and do crazy things.
Yeaa i was fuckin twisted but Big J came late and didnt smoke as much. He was just chillin on the couch just mellowed out n shit.
by JL OBrien February 25, 2008
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7
(adjective or interjection) Synonymous with chill or cool; just generally good.
(I learned it from someone from Utah)
"Yeah, it's pretty mellow that we get to move in here."

"I'm from New York." "Oh, mellow!"
by norcal nathan November 03, 2005
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