hung up adjective3 •(slang) Having a hang-up, or emotional difficulty.Gee, why are you still so hung up about missing those end-of-year activities? •(slang) In love.I'm hung up on Terry.I've been so hung up on the idea of being a couple. •In a position such that the path to the desired base is blocked by a fielder holding the ball; caught in a rundown.Snap throw to first, and they’ve got Sanchez hung up. formsmore hung up · most hung up