not too fussed Share definition Flag The act of being ambivalent and or uncaring about an outcome. ``Hey dude, do you want Swiss or Cheddar cheese?'' ``Meh, not too fussed mate.'' not too fussed by thehelix June 2, 2010 0 0 Get merch Get the not too fussed mug. Buy Now — $32.95 See more merch