Synonyms of obsession in English:

obsession


See definition of obsession

noun

1‘the idea grew in his mind until it became an obsession’

SYNONYMS
fixation, consuming passion, ruling passion, passion, mania, idée fixe, compulsion, preoccupation, enthusiasm, infatuation, addiction, fetish, craze, hobby horse
phobia, complex, neurosis
informal bee in one's bonnet, hang-up, thing, bug