jingoism - definition and synonyms

noun [uncountable] 

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/ˈdʒɪŋɡəʊˌɪz(ə)m/
  1. the belief that other countries are not as good as your own, and that your government should never trust them

derived word

jingoistic

 

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/ˌdʒɪŋɡəʊˈɪstɪk/
adjective