obsess

Universal Words verb 1 [VN] [usuallypassive] to completely fill your mind so that you cannot think of anything else: He's obsessed by computers. * She's completely obsessed with him. * The need to produce the most exciting newspaper story obsesses most journalists. 2 be obsessing (about sth) [V] to be always talking or worrying about a particular thing, especially when this annoys other people: I think you should try to stop obsessing about food.