Defontly Share definition Flag A term which has the same meaning as Definately but is used by beautiful people. " Richerd are you going to go to school today?" Kristi Pon asks. " Defontly " Richard replies. Defontly by Kathy Zi November 25, 2007 0 0 Get merch Get the Defontly mug. Buy Now — $32.95 See more merch