jingoism
noun/ˈdʒɪŋɡəʊɪzəm/
/ˈdʒɪŋɡəʊɪzəm/
[uncountable] (disapproving)- a strong belief that your own country is best, especially when this is expressed in support of war with another country
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jingoism
Definition of jingoism noun from the Oxford Advanced Learner's Dictionary