Not-so-much Share definition Flag Spoken fast, in an exhaling voice. Used in response to when someone says something that they know you would not like to do and/or agree to. Person 1: "Hey man wanna go get some tofu burgers?" Person 2: "Mmmmm, not-so-much" Not-so-much by Brok Lee May 1, 2005 0 0 Get merch Get the Not-so-much mug. Buy Now — $32.95 See more merch