American English

Definition of idée fixe noun from the Oxford Advanced American Dictionary

 

idée fixe

 noun
noun
NAmE//ˌideɪ ˈfiks//
 
(pl. idées fixes
NAmE//ˌideɪ ˈfiks//
 
)
(from French)
 
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an idea or desire that is so strong you cannot think about anything else
See the Oxford Advanced Learner's Dictionary entry: idée fixe