jin·go·ism 
/ˈʤɪŋgoʊˌɪzəm/ noun
/ˈʤɪŋgoʊˌɪzəm/ noun [noncount] disapproving : the feelings and beliefs of people who think that their country is always right and who are in favor of aggressive acts against other countries
▪ When the war began many people were caught up in a wave of jingoism.
▪ When the war began many people were caught up in a wave of jingoism.
— jin·go·is·tic /ˌʤɪŋgoʊˈɪstɪk/ adjective
▪ jingoistic attitudes
/ˌʤɪŋgoʊˈɪstɪk/ adjective ▪ jingoistic attitudes
