Boostacadid Share definition Flag pronounced (boost-a-kay-dit) a verb meaning:to beat up; to beat down; to mud stomp used in a sentence: Don't get boostacadid. Boostacadid by Harry James Chandler Jr. October 20, 2007 0 0 Get merch Get the Boostacadid mug. Buy Now — $32.95 See more merch