Top Definition
Bill Cosby made this word popular. Now days, Mr. Mackey on South Park says it.
Drugs are bad.....mmmk?
by Willizzle Tha Gangsta August 06, 2006
2 more definitions
10 Words related to mmmk
to agree with someone
ot to get someone's opinion.
person 1: you're coming to the beach mmmk?
person 2: mmmk!
by dhd May 10, 2005
Okay but not really. When you can't or don't want to say, "No", "you're wrong", or, "that's what you think!".
Husband says," I thought the truck was filled with gas so I took the car and filled it, forgot you needed it today."

Wife says,"Mmm K."
by Gavin's Mom July 09, 2013

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