Englishobsess
verb
thoughts of his own mortality obsessed him:
preoccupy, be uppermost in someone's mind, prey on someone's mind, prey on, possess, haunt, consume, plague, torment, hound, bedevil, take control of, take over, become an obsession with, have a hold on, engross, eat up, have a grip on, grip, dominate, rule, control, beset, monopolize.
□ be obsessed
she's obsessed with him |
he became obsessed by the urge to avenge his friend:
be fixated, be preoccupied, be infatuated, be possessed, be haunted, be consumed, be plagued, be tormented, be bedevilled, be eaten up, be gripped, be in the grip of, be dominated, be beset;
informal be hung up about/on, have a thing about, have something/someone on the brain, have a bee in one's bonnet;
North American, informal be hipped.
obsess Oxford Dictionary of English